Home / 28,144.55-38,838.94-15,569.30

Finding the Fourth Proportional to 28,144.55, 38,838.94 and 15,569.30

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Solution

The fourth proportional to 28,144.55, 38,838.94 and 15,569.30 is: 21,485.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.55 : 38,838.94 = 15,569.30 : x
  2. Step 2: Convert to fraction form
    28,144.55/38,838.94 = 15,569.30/x
  3. Step 3: Cross multiply
    28,144.55x = 38,838.94 × 15,569.30
  4. Step 4: Simplify right side
    28,144.55x = 604,694,875.42
  5. Step 5: Solve for x
    x = 604,694,875.42/28,144.55
  6. Step 6: Final answer
    x = 21,485.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.