Home / 10,312.68-15,470.10-5,117.16

Finding the Fourth Proportional to 10,312.68, 15,470.10 and 5,117.16

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Solution

The fourth proportional to 10,312.68, 15,470.10 and 5,117.16 is: 7,676.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.68 : 15,470.10 = 5,117.16 : x
  2. Step 2: Convert to fraction form
    10,312.68/15,470.10 = 5,117.16/x
  3. Step 3: Cross multiply
    10,312.68x = 15,470.10 × 5,117.16
  4. Step 4: Simplify right side
    10,312.68x = 79,162,976.92
  5. Step 5: Solve for x
    x = 79,162,976.92/10,312.68
  6. Step 6: Final answer
    x = 7,676.28

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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.