Home / 10,122.81-13,971.28-6,542.20

Finding the Fourth Proportional to 10,122.81, 13,971.28 and 6,542.20

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Solution

The fourth proportional to 10,122.81, 13,971.28 and 6,542.20 is: 9,029.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.81 : 13,971.28 = 6,542.20 : x
  2. Step 2: Convert to fraction form
    10,122.81/13,971.28 = 6,542.20/x
  3. Step 3: Cross multiply
    10,122.81x = 13,971.28 × 6,542.20
  4. Step 4: Simplify right side
    10,122.81x = 91,402,908.02
  5. Step 5: Solve for x
    x = 91,402,908.02/10,122.81
  6. Step 6: Final answer
    x = 9,029.40

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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.