Home / 10,139.61-15,210.75-3,816.57

Finding the Fourth Proportional to 10,139.61, 15,210.75 and 3,816.57

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Solution

The fourth proportional to 10,139.61, 15,210.75 and 3,816.57 is: 5,725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.61 : 15,210.75 = 3,816.57 : x
  2. Step 2: Convert to fraction form
    10,139.61/15,210.75 = 3,816.57/x
  3. Step 3: Cross multiply
    10,139.61x = 15,210.75 × 3,816.57
  4. Step 4: Simplify right side
    10,139.61x = 58,052,892.13
  5. Step 5: Solve for x
    x = 58,052,892.13/10,139.61
  6. Step 6: Final answer
    x = 5,725.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.