Home / 28,462.88-39,279.38-15,887.63

Finding the Fourth Proportional to 28,462.88, 39,279.38 and 15,887.63

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Solution

The fourth proportional to 28,462.88, 39,279.38 and 15,887.63 is: 21,925.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,462.88 : 39,279.38 = 15,887.63 : x
  2. Step 2: Convert to fraction form
    28,462.88/39,279.38 = 15,887.63/x
  3. Step 3: Cross multiply
    28,462.88x = 39,279.38 × 15,887.63
  4. Step 4: Simplify right side
    28,462.88x = 624,055,980.23
  5. Step 5: Solve for x
    x = 624,055,980.23/28,462.88
  6. Step 6: Final answer
    x = 21,925.26

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Half scale
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Double scale
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Similar ratio
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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.