Home / 10,135.31-13,986.59-5,659.13

Finding the Fourth Proportional to 10,135.31, 13,986.59 and 5,659.13

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Solution

The fourth proportional to 10,135.31, 13,986.59 and 5,659.13 is: 7,809.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,135.31 : 13,986.59 = 5,659.13 : x
  2. Step 2: Convert to fraction form
    10,135.31/13,986.59 = 5,659.13/x
  3. Step 3: Cross multiply
    10,135.31x = 13,986.59 × 5,659.13
  4. Step 4: Simplify right side
    10,135.31x = 79,151,937.74
  5. Step 5: Solve for x
    x = 79,151,937.74/10,135.31
  6. Step 6: Final answer
    x = 7,809.53

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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.