Home / 10,142.01-13,988.57-6,778.91

Finding the Fourth Proportional to 10,142.01, 13,988.57 and 6,778.91

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Solution

The fourth proportional to 10,142.01, 13,988.57 and 6,778.91 is: 9,349.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.01 : 13,988.57 = 6,778.91 : x
  2. Step 2: Convert to fraction form
    10,142.01/13,988.57 = 6,778.91/x
  3. Step 3: Cross multiply
    10,142.01x = 13,988.57 × 6,778.91
  4. Step 4: Simplify right side
    10,142.01x = 94,827,258.14
  5. Step 5: Solve for x
    x = 94,827,258.14/10,142.01
  6. Step 6: Final answer
    x = 9,349.95

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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.