Home / 20,686.36-31,011.02-10,150.60

Finding the Fourth Proportional to 20,686.36, 31,011.02 and 10,150.60

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Solution

The fourth proportional to 20,686.36, 31,011.02 and 10,150.60 is: 15,216.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.36 : 31,011.02 = 10,150.60 : x
  2. Step 2: Convert to fraction form
    20,686.36/31,011.02 = 10,150.60/x
  3. Step 3: Cross multiply
    20,686.36x = 31,011.02 × 10,150.60
  4. Step 4: Simplify right side
    20,686.36x = 314,780,459.61
  5. Step 5: Solve for x
    x = 314,780,459.61/20,686.36
  6. Step 6: Final answer
    x = 15,216.81

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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.