Home / 40,156.47-55,415-23,160.74

Finding the Fourth Proportional to 40,156.47, 55,415 and 23,160.74

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Solution

The fourth proportional to 40,156.47, 55,415 and 23,160.74 is: 31,961.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,156.47 : 55,415 = 23,160.74 : x
  2. Step 2: Convert to fraction form
    40,156.47/55,415 = 23,160.74/x
  3. Step 3: Cross multiply
    40,156.47x = 55,415 × 23,160.74
  4. Step 4: Simplify right side
    40,156.47x = 1,283,452,407.10
  5. Step 5: Solve for x
    x = 1,283,452,407.10/40,156.47
  6. Step 6: Final answer
    x = 31,961.29

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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.