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Finding the Fourth Proportional to 15,876.01, 23,820.50 and 8,478.55

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Solution

The fourth proportional to 15,876.01, 23,820.50 and 8,478.55 is: 12,721.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.01 : 23,820.50 = 8,478.55 : x
  2. Step 2: Convert to fraction form
    15,876.01/23,820.50 = 8,478.55/x
  3. Step 3: Cross multiply
    15,876.01x = 23,820.50 × 8,478.55
  4. Step 4: Simplify right side
    15,876.01x = 201,963,300.28
  5. Step 5: Solve for x
    x = 201,963,300.28/15,876.01
  6. Step 6: Final answer
    x = 12,721.29

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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.