Home / 15,014.43-20,728.35-9,985.50

Finding the Fourth Proportional to 15,014.43, 20,728.35 and 9,985.50

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Solution

The fourth proportional to 15,014.43, 20,728.35 and 9,985.50 is: 13,785.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.43 : 20,728.35 = 9,985.50 : x
  2. Step 2: Convert to fraction form
    15,014.43/20,728.35 = 9,985.50/x
  3. Step 3: Cross multiply
    15,014.43x = 20,728.35 × 9,985.50
  4. Step 4: Simplify right side
    15,014.43x = 206,982,938.93
  5. Step 5: Solve for x
    x = 206,982,938.93/15,014.43
  6. Step 6: Final answer
    x = 13,785.60

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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.