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Finding the Fourth Proportional to 28,476.16, 42,706.88 and 8,750.08

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Solution

The fourth proportional to 28,476.16, 42,706.88 and 8,750.08 is: 13,122.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.16 : 42,706.88 = 8,750.08 : x
  2. Step 2: Convert to fraction form
    28,476.16/42,706.88 = 8,750.08/x
  3. Step 3: Cross multiply
    28,476.16x = 42,706.88 × 8,750.08
  4. Step 4: Simplify right side
    28,476.16x = 373,688,616.55
  5. Step 5: Solve for x
    x = 373,688,616.55/28,476.16
  6. Step 6: Final answer
    x = 13,122.86

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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.