Home / 28,006.89-42,007.01-10,472.01

Finding the Fourth Proportional to 28,006.89, 42,007.01 and 10,472.01

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Solution

The fourth proportional to 28,006.89, 42,007.01 and 10,472.01 is: 15,706.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.89 : 42,007.01 = 10,472.01 : x
  2. Step 2: Convert to fraction form
    28,006.89/42,007.01 = 10,472.01/x
  3. Step 3: Cross multiply
    28,006.89x = 42,007.01 × 10,472.01
  4. Step 4: Simplify right side
    28,006.89x = 439,897,776.43
  5. Step 5: Solve for x
    x = 439,897,776.43/28,006.89
  6. Step 6: Final answer
    x = 15,706.77

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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.