Home / 21,179,328,015.40-31,768,992,023.10-7,220,711,285.80

Finding the Fourth Proportional to 21,179,328,015.40, 31,768,992,023.10 and 7,220,711,285.80

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Solution

The fourth proportional to 21,179,328,015.40, 31,768,992,023.10 and 7,220,711,285.80 is: 10,831,066,928.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179,328,015.40 : 31,768,992,023.10 = 7,220,711,285.80 : x
  2. Step 2: Convert to fraction form
    21,179,328,015.40/31,768,992,023.10 = 7,220,711,285.80/x
  3. Step 3: Cross multiply
    21,179,328,015.40x = 31,768,992,023.10 × 7,220,711,285.80
  4. Step 4: Simplify right side
    21,179,328,015.40x = 229,394,719,239,688,323,072
  5. Step 5: Solve for x
    x = 229,394,719,239,688,323,072/21,179,328,015.40
  6. Step 6: Final answer
    x = 10,831,066,928.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.