Home / 28,318.12-39,077.58-15,742.60

Finding the Fourth Proportional to 28,318.12, 39,077.58 and 15,742.60

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Solution

The fourth proportional to 28,318.12, 39,077.58 and 15,742.60 is: 21,724.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.12 : 39,077.58 = 15,742.60 : x
  2. Step 2: Convert to fraction form
    28,318.12/39,077.58 = 15,742.60/x
  3. Step 3: Cross multiply
    28,318.12x = 39,077.58 × 15,742.60
  4. Step 4: Simplify right side
    28,318.12x = 615,182,710.91
  5. Step 5: Solve for x
    x = 615,182,710.91/28,318.12
  6. Step 6: Final answer
    x = 21,724.00

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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.