Home / 13,210.83-18,231.03-7,242.57

Finding the Fourth Proportional to 13,210.83, 18,231.03 and 7,242.57

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Solution

The fourth proportional to 13,210.83, 18,231.03 and 7,242.57 is: 9,994.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.83 : 18,231.03 = 7,242.57 : x
  2. Step 2: Convert to fraction form
    13,210.83/18,231.03 = 7,242.57/x
  3. Step 3: Cross multiply
    13,210.83x = 18,231.03 × 7,242.57
  4. Step 4: Simplify right side
    13,210.83x = 132,039,510.95
  5. Step 5: Solve for x
    x = 132,039,510.95/13,210.83
  6. Step 6: Final answer
    x = 9,994.79

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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.