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Finding the Fourth Proportional to 15,018.16, 20,726.80 and 9,052.88

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Solution

The fourth proportional to 15,018.16, 20,726.80 and 9,052.88 is: 12,494.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.16 : 20,726.80 = 9,052.88 : x
  2. Step 2: Convert to fraction form
    15,018.16/20,726.80 = 9,052.88/x
  3. Step 3: Cross multiply
    15,018.16x = 20,726.80 × 9,052.88
  4. Step 4: Simplify right side
    15,018.16x = 187,637,233.18
  5. Step 5: Solve for x
    x = 187,637,233.18/15,018.16
  6. Step 6: Final answer
    x = 12,494.02

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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.