Home / 10,962.78-15,127.47-6,486.72

Finding the Fourth Proportional to 10,962.78, 15,127.47 and 6,486.72

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Solution

The fourth proportional to 10,962.78, 15,127.47 and 6,486.72 is: 8,950.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,962.78 : 15,127.47 = 6,486.72 : x
  2. Step 2: Convert to fraction form
    10,962.78/15,127.47 = 6,486.72/x
  3. Step 3: Cross multiply
    10,962.78x = 15,127.47 × 6,486.72
  4. Step 4: Simplify right side
    10,962.78x = 98,127,662.20
  5. Step 5: Solve for x
    x = 98,127,662.20/10,962.78
  6. Step 6: Final answer
    x = 8,950.98

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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.