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Finding the Fourth Proportional to 18,862.58, 26,035 and 10,909.74

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Solution

The fourth proportional to 18,862.58, 26,035 and 10,909.74 is: 15,058.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,862.58 : 26,035 = 10,909.74 : x
  2. Step 2: Convert to fraction form
    18,862.58/26,035 = 10,909.74/x
  3. Step 3: Cross multiply
    18,862.58x = 26,035 × 10,909.74
  4. Step 4: Simplify right side
    18,862.58x = 284,035,080.90
  5. Step 5: Solve for x
    x = 284,035,080.90/18,862.58
  6. Step 6: Final answer
    x = 15,058.12

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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.