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Finding the Fourth Proportional to 18,862.84, 28,290.60 and 17,926.20

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Solution

The fourth proportional to 18,862.84, 28,290.60 and 17,926.20 is: 26,885.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,862.84 : 28,290.60 = 17,926.20 : x
  2. Step 2: Convert to fraction form
    18,862.84/28,290.60 = 17,926.20/x
  3. Step 3: Cross multiply
    18,862.84x = 28,290.60 × 17,926.20
  4. Step 4: Simplify right side
    18,862.84x = 507,142,953.72
  5. Step 5: Solve for x
    x = 507,142,953.72/18,862.84
  6. Step 6: Final answer
    x = 26,885.82

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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.