Home / 28,088.10-42,144.30-21,838.75

Finding the Fourth Proportional to 28,088.10, 42,144.30 and 21,838.75

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Solution

The fourth proportional to 28,088.10, 42,144.30 and 21,838.75 is: 32,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.10 : 42,144.30 = 21,838.75 : x
  2. Step 2: Convert to fraction form
    28,088.10/42,144.30 = 21,838.75/x
  3. Step 3: Cross multiply
    28,088.10x = 42,144.30 × 21,838.75
  4. Step 4: Simplify right side
    28,088.10x = 920,378,726.26
  5. Step 5: Solve for x
    x = 920,378,726.26/28,088.10
  6. Step 6: Final answer
    x = 32,767.57

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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.