Home / 19,432.79-29,130.69-12,393.04

Finding the Fourth Proportional to 19,432.79, 29,130.69 and 12,393.04

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Solution

The fourth proportional to 19,432.79, 29,130.69 and 12,393.04 is: 18,577.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,432.79 : 29,130.69 = 12,393.04 : x
  2. Step 2: Convert to fraction form
    19,432.79/29,130.69 = 12,393.04/x
  3. Step 3: Cross multiply
    19,432.79x = 29,130.69 × 12,393.04
  4. Step 4: Simplify right side
    19,432.79x = 361,017,806.40
  5. Step 5: Solve for x
    x = 361,017,806.40/19,432.79
  6. Step 6: Final answer
    x = 18,577.77

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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.