Home / 28,143.18-42,220.44-13,353.66

Finding the Fourth Proportional to 28,143.18, 42,220.44 and 13,353.66

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Solution

The fourth proportional to 28,143.18, 42,220.44 and 13,353.66 is: 20,033.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.18 : 42,220.44 = 13,353.66 : x
  2. Step 2: Convert to fraction form
    28,143.18/42,220.44 = 13,353.66/x
  3. Step 3: Cross multiply
    28,143.18x = 42,220.44 × 13,353.66
  4. Step 4: Simplify right side
    28,143.18x = 563,797,400.81
  5. Step 5: Solve for x
    x = 563,797,400.81/28,143.18
  6. Step 6: Final answer
    x = 20,033.18

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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.