Home / 19,472.80-29,209.20-12,085.60

Finding the Fourth Proportional to 19,472.80, 29,209.20 and 12,085.60

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Solution

The fourth proportional to 19,472.80, 29,209.20 and 12,085.60 is: 18,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,472.80 : 29,209.20 = 12,085.60 : x
  2. Step 2: Convert to fraction form
    19,472.80/29,209.20 = 12,085.60/x
  3. Step 3: Cross multiply
    19,472.80x = 29,209.20 × 12,085.60
  4. Step 4: Simplify right side
    19,472.80x = 353,010,707.52
  5. Step 5: Solve for x
    x = 353,010,707.52/19,472.80
  6. Step 6: Final answer
    x = 18,128.40

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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.