Home / 19,385.61-29,077.80-8,146.91

Finding the Fourth Proportional to 19,385.61, 29,077.80 and 8,146.91

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Solution

The fourth proportional to 19,385.61, 29,077.80 and 8,146.91 is: 12,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,385.61 : 29,077.80 = 8,146.91 : x
  2. Step 2: Convert to fraction form
    19,385.61/29,077.80 = 8,146.91/x
  3. Step 3: Cross multiply
    19,385.61x = 29,077.80 × 8,146.91
  4. Step 4: Simplify right side
    19,385.61x = 236,894,074.21
  5. Step 5: Solve for x
    x = 236,894,074.21/19,385.61
  6. Step 6: Final answer
    x = 12,220.10

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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.