Home / 28,231.40-38,958.36-15,655.52

Finding the Fourth Proportional to 28,231.40, 38,958.36 and 15,655.52

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Solution

The fourth proportional to 28,231.40, 38,958.36 and 15,655.52 is: 21,604.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.40 : 38,958.36 = 15,655.52 : x
  2. Step 2: Convert to fraction form
    28,231.40/38,958.36 = 15,655.52/x
  3. Step 3: Cross multiply
    28,231.40x = 38,958.36 × 15,655.52
  4. Step 4: Simplify right side
    28,231.40x = 609,913,384.15
  5. Step 5: Solve for x
    x = 609,913,384.15/28,231.40
  6. Step 6: Final answer
    x = 21,604.08

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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.