Home / 25,473.12-38,189.86-12,139.20

Finding the Fourth Proportional to 25,473.12, 38,189.86 and 12,139.20

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Solution

The fourth proportional to 25,473.12, 38,189.86 and 12,139.20 is: 18,199.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,473.12 : 38,189.86 = 12,139.20 : x
  2. Step 2: Convert to fraction form
    25,473.12/38,189.86 = 12,139.20/x
  3. Step 3: Cross multiply
    25,473.12x = 38,189.86 × 12,139.20
  4. Step 4: Simplify right side
    25,473.12x = 463,594,348.51
  5. Step 5: Solve for x
    x = 463,594,348.51/25,473.12
  6. Step 6: Final answer
    x = 18,199.35

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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.