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Finding the Fourth Proportional to 28,157.47, 38,822.02 and 18,068.11

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Solution

The fourth proportional to 28,157.47, 38,822.02 and 18,068.11 is: 24,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.47 : 38,822.02 = 18,068.11 : x
  2. Step 2: Convert to fraction form
    28,157.47/38,822.02 = 18,068.11/x
  3. Step 3: Cross multiply
    28,157.47x = 38,822.02 × 18,068.11
  4. Step 4: Simplify right side
    28,157.47x = 701,440,527.78
  5. Step 5: Solve for x
    x = 701,440,527.78/28,157.47
  6. Step 6: Final answer
    x = 24,911.35

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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.