Home / 10,478.31-14,456.54-7,115.29

Finding the Fourth Proportional to 10,478.31, 14,456.54 and 7,115.29

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Solution

The fourth proportional to 10,478.31, 14,456.54 and 7,115.29 is: 9,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.31 : 14,456.54 = 7,115.29 : x
  2. Step 2: Convert to fraction form
    10,478.31/14,456.54 = 7,115.29/x
  3. Step 3: Cross multiply
    10,478.31x = 14,456.54 × 7,115.29
  4. Step 4: Simplify right side
    10,478.31x = 102,862,460.99
  5. Step 5: Solve for x
    x = 102,862,460.99/10,478.31
  6. Step 6: Final answer
    x = 9,816.70

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1.5x scale

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.