Home / 13,430.04-20,128.02-7,589.92

Finding the Fourth Proportional to 13,430.04, 20,128.02 and 7,589.92

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Solution

The fourth proportional to 13,430.04, 20,128.02 and 7,589.92 is: 11,375.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.04 : 20,128.02 = 7,589.92 : x
  2. Step 2: Convert to fraction form
    13,430.04/20,128.02 = 7,589.92/x
  3. Step 3: Cross multiply
    13,430.04x = 20,128.02 × 7,589.92
  4. Step 4: Simplify right side
    13,430.04x = 152,770,061.56
  5. Step 5: Solve for x
    x = 152,770,061.56/13,430.04
  6. Step 6: Final answer
    x = 11,375.25

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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.