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Finding the Fourth Proportional to 28,002.60, 38,642.13 and 17,392.01

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Solution

The fourth proportional to 28,002.60, 38,642.13 and 17,392.01 is: 24,000.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.60 : 38,642.13 = 17,392.01 : x
  2. Step 2: Convert to fraction form
    28,002.60/38,642.13 = 17,392.01/x
  3. Step 3: Cross multiply
    28,002.60x = 38,642.13 × 17,392.01
  4. Step 4: Simplify right side
    28,002.60x = 672,064,118.17
  5. Step 5: Solve for x
    x = 672,064,118.17/28,002.60
  6. Step 6: Final answer
    x = 24,000.06

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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.