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Finding the Fourth Proportional to 18,854.69, 28,281.60 and 9,492.20

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Solution

The fourth proportional to 18,854.69, 28,281.60 and 9,492.20 is: 14,238.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.69 : 28,281.60 = 9,492.20 : x
  2. Step 2: Convert to fraction form
    18,854.69/28,281.60 = 9,492.20/x
  3. Step 3: Cross multiply
    18,854.69x = 28,281.60 × 9,492.20
  4. Step 4: Simplify right side
    18,854.69x = 268,454,462.11
  5. Step 5: Solve for x
    x = 268,454,462.11/18,854.69
  6. Step 6: Final answer
    x = 14,238.08

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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.