Home / 20,111,921.20-30,167,881.80-7,332,842.80

Finding the Fourth Proportional to 20,111,921.20, 30,167,881.80 and 7,332,842.80

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Solution

The fourth proportional to 20,111,921.20, 30,167,881.80 and 7,332,842.80 is: 10,999,264.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,921.20 : 30,167,881.80 = 7,332,842.80 : x
  2. Step 2: Convert to fraction form
    20,111,921.20/30,167,881.80 = 7,332,842.80/x
  3. Step 3: Cross multiply
    20,111,921.20x = 30,167,881.80 × 7,332,842.80
  4. Step 4: Simplify right side
    20,111,921.20x = 221,216,334,848,381.03
  5. Step 5: Solve for x
    x = 221,216,334,848,381.03/20,111,921.20
  6. Step 6: Final answer
    x = 10,999,264.20

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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.