Home / 25,430.30-38,130-11,387.72

Finding the Fourth Proportional to 25,430.30, 38,130 and 11,387.72

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Solution

The fourth proportional to 25,430.30, 38,130 and 11,387.72 is: 17,074.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,430.30 : 38,130 = 11,387.72 : x
  2. Step 2: Convert to fraction form
    25,430.30/38,130 = 11,387.72/x
  3. Step 3: Cross multiply
    25,430.30x = 38,130 × 11,387.72
  4. Step 4: Simplify right side
    25,430.30x = 434,213,763.60
  5. Step 5: Solve for x
    x = 434,213,763.60/25,430.30
  6. Step 6: Final answer
    x = 17,074.66

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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.