Home / 10,478.04-15,713.10-5,280.36

Finding the Fourth Proportional to 10,478.04, 15,713.10 and 5,280.36

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Solution

The fourth proportional to 10,478.04, 15,713.10 and 5,280.36 is: 7,918.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.04 : 15,713.10 = 5,280.36 : x
  2. Step 2: Convert to fraction form
    10,478.04/15,713.10 = 5,280.36/x
  3. Step 3: Cross multiply
    10,478.04x = 15,713.10 × 5,280.36
  4. Step 4: Simplify right side
    10,478.04x = 82,970,824.72
  5. Step 5: Solve for x
    x = 82,970,824.72/10,478.04
  6. Step 6: Final answer
    x = 7,918.54

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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.