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Finding the Fourth Proportional to 15,475.52, 21,356.16 and 8,401.52

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Solution

The fourth proportional to 15,475.52, 21,356.16 and 8,401.52 is: 11,594.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.52 : 21,356.16 = 8,401.52 : x
  2. Step 2: Convert to fraction form
    15,475.52/21,356.16 = 8,401.52/x
  3. Step 3: Cross multiply
    15,475.52x = 21,356.16 × 8,401.52
  4. Step 4: Simplify right side
    15,475.52x = 179,424,205.36
  5. Step 5: Solve for x
    x = 179,424,205.36/15,475.52
  6. Step 6: Final answer
    x = 11,594.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.