Home / 9,931.40-14,925.90-8,664.20

Finding the Fourth Proportional to 9,931.40, 14,925.90 and 8,664.20

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Solution

The fourth proportional to 9,931.40, 14,925.90 and 8,664.20 is: 13,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,931.40 : 14,925.90 = 8,664.20 : x
  2. Step 2: Convert to fraction form
    9,931.40/14,925.90 = 8,664.20/x
  3. Step 3: Cross multiply
    9,931.40x = 14,925.90 × 8,664.20
  4. Step 4: Simplify right side
    9,931.40x = 129,320,982.78
  5. Step 5: Solve for x
    x = 129,320,982.78/9,931.40
  6. Step 6: Final answer
    x = 13,021.43

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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.