Home / 40,726.60-61,099.46-12,645.20

Finding the Fourth Proportional to 40,726.60, 61,099.46 and 12,645.20

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Solution

The fourth proportional to 40,726.60, 61,099.46 and 12,645.20 is: 18,970.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,726.60 : 61,099.46 = 12,645.20 : x
  2. Step 2: Convert to fraction form
    40,726.60/61,099.46 = 12,645.20/x
  3. Step 3: Cross multiply
    40,726.60x = 61,099.46 × 12,645.20
  4. Step 4: Simplify right side
    40,726.60x = 772,615,028.53
  5. Step 5: Solve for x
    x = 772,615,028.53/40,726.60
  6. Step 6: Final answer
    x = 18,970.77

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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.