Home / 10,972.72-15,139.74-6,255.28

Finding the Fourth Proportional to 10,972.72, 15,139.74 and 6,255.28

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Solution

The fourth proportional to 10,972.72, 15,139.74 and 6,255.28 is: 8,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.72 : 15,139.74 = 6,255.28 : x
  2. Step 2: Convert to fraction form
    10,972.72/15,139.74 = 6,255.28/x
  3. Step 3: Cross multiply
    10,972.72x = 15,139.74 × 6,255.28
  4. Step 4: Simplify right side
    10,972.72x = 94,703,312.83
  5. Step 5: Solve for x
    x = 94,703,312.83/10,972.72
  6. Step 6: Final answer
    x = 8,630.80

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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.