Home / 30,655.28-42,268.16-28,763.52

Finding the Fourth Proportional to 30,655.28, 42,268.16 and 28,763.52

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Solution

The fourth proportional to 30,655.28, 42,268.16 and 28,763.52 is: 39,659.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,655.28 : 42,268.16 = 28,763.52 : x
  2. Step 2: Convert to fraction form
    30,655.28/42,268.16 = 28,763.52/x
  3. Step 3: Cross multiply
    30,655.28x = 42,268.16 × 28,763.52
  4. Step 4: Simplify right side
    30,655.28x = 1,215,781,065.52
  5. Step 5: Solve for x
    x = 1,215,781,065.52/30,655.28
  6. Step 6: Final answer
    x = 39,659.76

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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.