Home / 13,089.50-18,062.98-7,121.17

Finding the Fourth Proportional to 13,089.50, 18,062.98 and 7,121.17

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Solution

The fourth proportional to 13,089.50, 18,062.98 and 7,121.17 is: 9,826.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.50 : 18,062.98 = 7,121.17 : x
  2. Step 2: Convert to fraction form
    13,089.50/18,062.98 = 7,121.17/x
  3. Step 3: Cross multiply
    13,089.50x = 18,062.98 × 7,121.17
  4. Step 4: Simplify right side
    13,089.50x = 128,629,551.29
  5. Step 5: Solve for x
    x = 128,629,551.29/13,089.50
  6. Step 6: Final answer
    x = 9,826.93

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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.