Home / 10,129.59-13,979.54-5,654.22

Finding the Fourth Proportional to 10,129.59, 13,979.54 and 5,654.22

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Solution

The fourth proportional to 10,129.59, 13,979.54 and 5,654.22 is: 7,803.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.59 : 13,979.54 = 5,654.22 : x
  2. Step 2: Convert to fraction form
    10,129.59/13,979.54 = 5,654.22/x
  3. Step 3: Cross multiply
    10,129.59x = 13,979.54 × 5,654.22
  4. Step 4: Simplify right side
    10,129.59x = 79,043,296.49
  5. Step 5: Solve for x
    x = 79,043,296.49/10,129.59
  6. Step 6: Final answer
    x = 7,803.21

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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.