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Finding the Fourth Proportional to 15,423.16, 23,129.95 and 5,561.16

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Solution

The fourth proportional to 15,423.16, 23,129.95 and 5,561.16 is: 8,340.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.16 : 23,129.95 = 5,561.16 : x
  2. Step 2: Convert to fraction form
    15,423.16/23,129.95 = 5,561.16/x
  3. Step 3: Cross multiply
    15,423.16x = 23,129.95 × 5,561.16
  4. Step 4: Simplify right side
    15,423.16x = 128,629,352.74
  5. Step 5: Solve for x
    x = 128,629,352.74/15,423.16
  6. Step 6: Final answer
    x = 8,340.01

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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.