Home / 28,144.50-38,840.64-15,569.25

Finding the Fourth Proportional to 28,144.50, 38,840.64 and 15,569.25

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Solution

The fourth proportional to 28,144.50, 38,840.64 and 15,569.25 is: 21,486.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.50 : 38,840.64 = 15,569.25 : x
  2. Step 2: Convert to fraction form
    28,144.50/38,840.64 = 15,569.25/x
  3. Step 3: Cross multiply
    28,144.50x = 38,840.64 × 15,569.25
  4. Step 4: Simplify right side
    28,144.50x = 604,719,634.32
  5. Step 5: Solve for x
    x = 604,719,634.32/28,144.50
  6. Step 6: Final answer
    x = 21,486.25

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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.