Home / 10,128.04-15,190.13-4,288.75

Finding the Fourth Proportional to 10,128.04, 15,190.13 and 4,288.75

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Solution

The fourth proportional to 10,128.04, 15,190.13 and 4,288.75 is: 6,432.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.04 : 15,190.13 = 4,288.75 : x
  2. Step 2: Convert to fraction form
    10,128.04/15,190.13 = 4,288.75/x
  3. Step 3: Cross multiply
    10,128.04x = 15,190.13 × 4,288.75
  4. Step 4: Simplify right side
    10,128.04x = 65,146,642.78
  5. Step 5: Solve for x
    x = 65,146,642.78/10,128.04
  6. Step 6: Final answer
    x = 6,432.31

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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.