Home / 19,432.54-29,130.31-12,392.79

Finding the Fourth Proportional to 19,432.54, 29,130.31 and 12,392.79

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Solution

The fourth proportional to 19,432.54, 29,130.31 and 12,392.79 is: 18,577.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,432.54 : 29,130.31 = 12,392.79 : x
  2. Step 2: Convert to fraction form
    19,432.54/29,130.31 = 12,392.79/x
  3. Step 3: Cross multiply
    19,432.54x = 29,130.31 × 12,392.79
  4. Step 4: Simplify right side
    19,432.54x = 361,005,814.46
  5. Step 5: Solve for x
    x = 361,005,814.46/19,432.54
  6. Step 6: Final answer
    x = 18,577.39

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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.