Home / 26,931.60-40,397.40-15,121.80

Finding the Fourth Proportional to 26,931.60, 40,397.40 and 15,121.80

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Solution

The fourth proportional to 26,931.60, 40,397.40 and 15,121.80 is: 22,682.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,931.60 : 40,397.40 = 15,121.80 : x
  2. Step 2: Convert to fraction form
    26,931.60/40,397.40 = 15,121.80/x
  3. Step 3: Cross multiply
    26,931.60x = 40,397.40 × 15,121.80
  4. Step 4: Simplify right side
    26,931.60x = 610,881,403.32
  5. Step 5: Solve for x
    x = 610,881,403.32/26,931.60
  6. Step 6: Final answer
    x = 22,682.70

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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.