Home / 10,140.40-15,198.72-4,587.28

Finding the Fourth Proportional to 10,140.40, 15,198.72 and 4,587.28

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Solution

The fourth proportional to 10,140.40, 15,198.72 and 4,587.28 is: 6,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.40 : 15,198.72 = 4,587.28 : x
  2. Step 2: Convert to fraction form
    10,140.40/15,198.72 = 4,587.28/x
  3. Step 3: Cross multiply
    10,140.40x = 15,198.72 × 4,587.28
  4. Step 4: Simplify right side
    10,140.40x = 69,720,784.28
  5. Step 5: Solve for x
    x = 69,720,784.28/10,140.40
  6. Step 6: Final answer
    x = 6,875.55

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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.