Home / 29,280.39-40,406.96-15,851.76

Finding the Fourth Proportional to 29,280.39, 40,406.96 and 15,851.76

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Solution

The fourth proportional to 29,280.39, 40,406.96 and 15,851.76 is: 21,875.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,280.39 : 40,406.96 = 15,851.76 : x
  2. Step 2: Convert to fraction form
    29,280.39/40,406.96 = 15,851.76/x
  3. Step 3: Cross multiply
    29,280.39x = 40,406.96 × 15,851.76
  4. Step 4: Simplify right side
    29,280.39x = 640,521,432.25
  5. Step 5: Solve for x
    x = 640,521,432.25/29,280.39
  6. Step 6: Final answer
    x = 21,875.44

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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.