Home / 21,687,140.28-29,926,347.51-12,392,865.96

Finding the Fourth Proportional to 21,687,140.28, 29,926,347.51 and 12,392,865.96

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Solution

The fourth proportional to 21,687,140.28, 29,926,347.51 and 12,392,865.96 is: 17,101,065.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687,140.28 : 29,926,347.51 = 12,392,865.96 : x
  2. Step 2: Convert to fraction form
    21,687,140.28/29,926,347.51 = 12,392,865.96/x
  3. Step 3: Cross multiply
    21,687,140.28x = 29,926,347.51 × 12,392,865.96
  4. Step 4: Simplify right side
    21,687,140.28x = 370,873,213,363,809.81
  5. Step 5: Solve for x
    x = 370,873,213,363,809.81/21,687,140.28
  6. Step 6: Final answer
    x = 17,101,065.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.