Home / 28,104.66-42,155.10-13,325.40

Finding the Fourth Proportional to 28,104.66, 42,155.10 and 13,325.40

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Solution

The fourth proportional to 28,104.66, 42,155.10 and 13,325.40 is: 19,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.66 : 42,155.10 = 13,325.40 : x
  2. Step 2: Convert to fraction form
    28,104.66/42,155.10 = 13,325.40/x
  3. Step 3: Cross multiply
    28,104.66x = 42,155.10 × 13,325.40
  4. Step 4: Simplify right side
    28,104.66x = 561,733,569.54
  5. Step 5: Solve for x
    x = 561,733,569.54/28,104.66
  6. Step 6: Final answer
    x = 19,987.20

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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.