Home / 10,931.60-15,101.16-9,376.40

Finding the Fourth Proportional to 10,931.60, 15,101.16 and 9,376.40

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Solution

The fourth proportional to 10,931.60, 15,101.16 and 9,376.40 is: 12,952.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.60 : 15,101.16 = 9,376.40 : x
  2. Step 2: Convert to fraction form
    10,931.60/15,101.16 = 9,376.40/x
  3. Step 3: Cross multiply
    10,931.60x = 15,101.16 × 9,376.40
  4. Step 4: Simplify right side
    10,931.60x = 141,594,516.62
  5. Step 5: Solve for x
    x = 141,594,516.62/10,931.60
  6. Step 6: Final answer
    x = 12,952.77

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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.