Home / 15,015.40-20,724.82-9,047.07

Finding the Fourth Proportional to 15,015.40, 20,724.82 and 9,047.07

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Solution

The fourth proportional to 15,015.40, 20,724.82 and 9,047.07 is: 12,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.40 : 20,724.82 = 9,047.07 : x
  2. Step 2: Convert to fraction form
    15,015.40/20,724.82 = 9,047.07/x
  3. Step 3: Cross multiply
    15,015.40x = 20,724.82 × 9,047.07
  4. Step 4: Simplify right side
    15,015.40x = 187,498,810.50
  5. Step 5: Solve for x
    x = 187,498,810.50/15,015.40
  6. Step 6: Final answer
    x = 12,487.10

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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.