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Finding the Fourth Proportional to 18,707.84, 28,061.84 and 5,560.32

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Solution

The fourth proportional to 18,707.84, 28,061.84 and 5,560.32 is: 8,340.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.84 : 28,061.84 = 5,560.32 : x
  2. Step 2: Convert to fraction form
    18,707.84/28,061.84 = 5,560.32/x
  3. Step 3: Cross multiply
    18,707.84x = 28,061.84 × 5,560.32
  4. Step 4: Simplify right side
    18,707.84x = 156,032,810.19
  5. Step 5: Solve for x
    x = 156,032,810.19/18,707.84
  6. Step 6: Final answer
    x = 8,340.50

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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.