Home / 13,218.59-19,810.77-10,087.04

Finding the Fourth Proportional to 13,218.59, 19,810.77 and 10,087.04

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Solution

The fourth proportional to 13,218.59, 19,810.77 and 10,087.04 is: 15,117.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.59 : 19,810.77 = 10,087.04 : x
  2. Step 2: Convert to fraction form
    13,218.59/19,810.77 = 10,087.04/x
  3. Step 3: Cross multiply
    13,218.59x = 19,810.77 × 10,087.04
  4. Step 4: Simplify right side
    13,218.59x = 199,832,029.42
  5. Step 5: Solve for x
    x = 199,832,029.42/13,218.59
  6. Step 6: Final answer
    x = 15,117.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.