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Finding the Fourth Proportional to 18,888.68, 28,348.06 and 10,567.15

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Solution

The fourth proportional to 18,888.68, 28,348.06 and 10,567.15 is: 15,859.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.68 : 28,348.06 = 10,567.15 : x
  2. Step 2: Convert to fraction form
    18,888.68/28,348.06 = 10,567.15/x
  3. Step 3: Cross multiply
    18,888.68x = 28,348.06 × 10,567.15
  4. Step 4: Simplify right side
    18,888.68x = 299,558,202.23
  5. Step 5: Solve for x
    x = 299,558,202.23/18,888.68
  6. Step 6: Final answer
    x = 15,859.14

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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.