Home / 40,215.28-60,339.48-13,938.48

Finding the Fourth Proportional to 40,215.28, 60,339.48 and 13,938.48

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Solution

The fourth proportional to 40,215.28, 60,339.48 and 13,938.48 is: 20,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,215.28 : 60,339.48 = 13,938.48 : x
  2. Step 2: Convert to fraction form
    40,215.28/60,339.48 = 13,938.48/x
  3. Step 3: Cross multiply
    40,215.28x = 60,339.48 × 13,938.48
  4. Step 4: Simplify right side
    40,215.28x = 841,040,263.80
  5. Step 5: Solve for x
    x = 841,040,263.80/40,215.28
  6. Step 6: Final answer
    x = 20,913.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.