Home / 10,135.95-13,987.61-5,659.70

Finding the Fourth Proportional to 10,135.95, 13,987.61 and 5,659.70

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Solution

The fourth proportional to 10,135.95, 13,987.61 and 5,659.70 is: 7,810.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,135.95 : 13,987.61 = 5,659.70 : x
  2. Step 2: Convert to fraction form
    10,135.95/13,987.61 = 5,659.70/x
  3. Step 3: Cross multiply
    10,135.95x = 13,987.61 × 5,659.70
  4. Step 4: Simplify right side
    10,135.95x = 79,165,677.98
  5. Step 5: Solve for x
    x = 79,165,677.98/10,135.95
  6. Step 6: Final answer
    x = 7,810.38

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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.