Home / 28,011,333.92-38,655,935.40-15,788,190.92

Finding the Fourth Proportional to 28,011,333.92, 38,655,935.40 and 15,788,190.92

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Solution

The fourth proportional to 28,011,333.92, 38,655,935.40 and 15,788,190.92 is: 21,787,869.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011,333.92 : 38,655,935.40 = 15,788,190.92 : x
  2. Step 2: Convert to fraction form
    28,011,333.92/38,655,935.40 = 15,788,190.92/x
  3. Step 3: Cross multiply
    28,011,333.92x = 38,655,935.40 × 15,788,190.92
  4. Step 4: Simplify right side
    28,011,333.92x = 610,307,288,286,386.50
  5. Step 5: Solve for x
    x = 610,307,288,286,386.50/28,011,333.92
  6. Step 6: Final answer
    x = 21,787,869.51

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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.