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Finding the Fourth Proportional to 17,987.96, 26,931.06 and 9,535.21

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Solution

The fourth proportional to 17,987.96, 26,931.06 and 9,535.21 is: 14,275.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,987.96 : 26,931.06 = 9,535.21 : x
  2. Step 2: Convert to fraction form
    17,987.96/26,931.06 = 9,535.21/x
  3. Step 3: Cross multiply
    17,987.96x = 26,931.06 × 9,535.21
  4. Step 4: Simplify right side
    17,987.96x = 256,793,312.62
  5. Step 5: Solve for x
    x = 256,793,312.62/17,987.96
  6. Step 6: Final answer
    x = 14,275.84

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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.