Home / 15,301.56-21,120.36-9,015.96

Finding the Fourth Proportional to 15,301.56, 21,120.36 and 9,015.96

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Solution

The fourth proportional to 15,301.56, 21,120.36 and 9,015.96 is: 12,444.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.56 : 21,120.36 = 9,015.96 : x
  2. Step 2: Convert to fraction form
    15,301.56/21,120.36 = 9,015.96/x
  3. Step 3: Cross multiply
    15,301.56x = 21,120.36 × 9,015.96
  4. Step 4: Simplify right side
    15,301.56x = 190,420,320.95
  5. Step 5: Solve for x
    x = 190,420,320.95/15,301.56
  6. Step 6: Final answer
    x = 12,444.50

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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.