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Finding the Fourth Proportional to 15,398.88, 23,075.52 and 12,644.88

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Solution

The fourth proportional to 15,398.88, 23,075.52 and 12,644.88 is: 18,948.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.88 : 23,075.52 = 12,644.88 : x
  2. Step 2: Convert to fraction form
    15,398.88/23,075.52 = 12,644.88/x
  3. Step 3: Cross multiply
    15,398.88x = 23,075.52 × 12,644.88
  4. Step 4: Simplify right side
    15,398.88x = 291,787,181.34
  5. Step 5: Solve for x
    x = 291,787,181.34/15,398.88
  6. Step 6: Final answer
    x = 18,948.60

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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.