Home / 10,931.48-15,085.70-6,456.32

Finding the Fourth Proportional to 10,931.48, 15,085.70 and 6,456.32

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Solution

The fourth proportional to 10,931.48, 15,085.70 and 6,456.32 is: 8,909.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.48 : 15,085.70 = 6,456.32 : x
  2. Step 2: Convert to fraction form
    10,931.48/15,085.70 = 6,456.32/x
  3. Step 3: Cross multiply
    10,931.48x = 15,085.70 × 6,456.32
  4. Step 4: Simplify right side
    10,931.48x = 97,398,106.62
  5. Step 5: Solve for x
    x = 97,398,106.62/10,931.48
  6. Step 6: Final answer
    x = 8,909.87

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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.