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Finding the Fourth Proportional to 25,695.16, 38,519.35 and 9,890.10

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Solution

The fourth proportional to 25,695.16, 38,519.35 and 9,890.10 is: 14,826.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,695.16 : 38,519.35 = 9,890.10 : x
  2. Step 2: Convert to fraction form
    25,695.16/38,519.35 = 9,890.10/x
  3. Step 3: Cross multiply
    25,695.16x = 38,519.35 × 9,890.10
  4. Step 4: Simplify right side
    25,695.16x = 380,960,223.44
  5. Step 5: Solve for x
    x = 380,960,223.44/25,695.16
  6. Step 6: Final answer
    x = 14,826.15

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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.