Home / 10,962.18-15,128.34-6,488.54

Finding the Fourth Proportional to 10,962.18, 15,128.34 and 6,488.54

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Solution

The fourth proportional to 10,962.18, 15,128.34 and 6,488.54 is: 8,954.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,962.18 : 15,128.34 = 6,488.54 : x
  2. Step 2: Convert to fraction form
    10,962.18/15,128.34 = 6,488.54/x
  3. Step 3: Cross multiply
    10,962.18x = 15,128.34 × 6,488.54
  4. Step 4: Simplify right side
    10,962.18x = 98,160,839.22
  5. Step 5: Solve for x
    x = 98,160,839.22/10,962.18
  6. Step 6: Final answer
    x = 8,954.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.