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Finding the Fourth Proportional to 28,491.16, 42,752.04 and 14,640.16

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Solution

The fourth proportional to 28,491.16, 42,752.04 and 14,640.16 is: 21,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,491.16 : 42,752.04 = 14,640.16 : x
  2. Step 2: Convert to fraction form
    28,491.16/42,752.04 = 14,640.16/x
  3. Step 3: Cross multiply
    28,491.16x = 42,752.04 × 14,640.16
  4. Step 4: Simplify right side
    28,491.16x = 625,896,705.93
  5. Step 5: Solve for x
    x = 625,896,705.93/28,491.16
  6. Step 6: Final answer
    x = 21,968.10

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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.