Home / 21,068,200.40-31,595,739.60-8,292,621.20

Finding the Fourth Proportional to 21,068,200.40, 31,595,739.60 and 8,292,621.20

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Solution

The fourth proportional to 21,068,200.40, 31,595,739.60 and 8,292,621.20 is: 12,436,349.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068,200.40 : 31,595,739.60 = 8,292,621.20 : x
  2. Step 2: Convert to fraction form
    21,068,200.40/31,595,739.60 = 8,292,621.20/x
  3. Step 3: Cross multiply
    21,068,200.40x = 31,595,739.60 × 8,292,621.20
  4. Step 4: Simplify right side
    21,068,200.40x = 262,011,500,036,639.53
  5. Step 5: Solve for x
    x = 262,011,500,036,639.53/21,068,200.40
  6. Step 6: Final answer
    x = 12,436,349.34

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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.