Home / 25,421.16-38,109.06-12,934.20

Finding the Fourth Proportional to 25,421.16, 38,109.06 and 12,934.20

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Solution

The fourth proportional to 25,421.16, 38,109.06 and 12,934.20 is: 19,389.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,421.16 : 38,109.06 = 12,934.20 : x
  2. Step 2: Convert to fraction form
    25,421.16/38,109.06 = 12,934.20/x
  3. Step 3: Cross multiply
    25,421.16x = 38,109.06 × 12,934.20
  4. Step 4: Simplify right side
    25,421.16x = 492,910,203.85
  5. Step 5: Solve for x
    x = 492,910,203.85/25,421.16
  6. Step 6: Final answer
    x = 19,389.76

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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.