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Finding the Fourth Proportional to 9,439.71, 14,157.68 and 8,971.35

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Solution

The fourth proportional to 9,439.71, 14,157.68 and 8,971.35 is: 13,455.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,439.71 : 14,157.68 = 8,971.35 : x
  2. Step 2: Convert to fraction form
    9,439.71/14,157.68 = 8,971.35/x
  3. Step 3: Cross multiply
    9,439.71x = 14,157.68 × 8,971.35
  4. Step 4: Simplify right side
    9,439.71x = 127,013,457.61
  5. Step 5: Solve for x
    x = 127,013,457.61/9,439.71
  6. Step 6: Final answer
    x = 13,455.23

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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.