Home / 13,568.13-20,218.95-13,122.18

Finding the Fourth Proportional to 13,568.13, 20,218.95 and 13,122.18

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Solution

The fourth proportional to 13,568.13, 20,218.95 and 13,122.18 is: 19,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.13 : 20,218.95 = 13,122.18 : x
  2. Step 2: Convert to fraction form
    13,568.13/20,218.95 = 13,122.18/x
  3. Step 3: Cross multiply
    13,568.13x = 20,218.95 × 13,122.18
  4. Step 4: Simplify right side
    13,568.13x = 265,316,701.31
  5. Step 5: Solve for x
    x = 265,316,701.31/13,568.13
  6. Step 6: Final answer
    x = 19,554.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.