Home / 28,543.54-42,840.75-13,569.12

Finding the Fourth Proportional to 28,543.54, 42,840.75 and 13,569.12

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Solution

The fourth proportional to 28,543.54, 42,840.75 and 13,569.12 is: 20,365.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.54 : 42,840.75 = 13,569.12 : x
  2. Step 2: Convert to fraction form
    28,543.54/42,840.75 = 13,569.12/x
  3. Step 3: Cross multiply
    28,543.54x = 42,840.75 × 13,569.12
  4. Step 4: Simplify right side
    28,543.54x = 581,311,252.20
  5. Step 5: Solve for x
    x = 581,311,252.20/28,543.54
  6. Step 6: Final answer
    x = 20,365.77

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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.