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Finding the Fourth Proportional to 14,888.82, 20,545.07 and 8,920.34

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Solution

The fourth proportional to 14,888.82, 20,545.07 and 8,920.34 is: 12,309.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,888.82 : 20,545.07 = 8,920.34 : x
  2. Step 2: Convert to fraction form
    14,888.82/20,545.07 = 8,920.34/x
  3. Step 3: Cross multiply
    14,888.82x = 20,545.07 × 8,920.34
  4. Step 4: Simplify right side
    14,888.82x = 183,268,862.40
  5. Step 5: Solve for x
    x = 183,268,862.40/14,888.82
  6. Step 6: Final answer
    x = 12,309.16

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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.