Home / 18,988.56-26,199.03-13,021.69

Finding the Fourth Proportional to 18,988.56, 26,199.03 and 13,021.69

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Solution

The fourth proportional to 18,988.56, 26,199.03 and 13,021.69 is: 17,966.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.56 : 26,199.03 = 13,021.69 : x
  2. Step 2: Convert to fraction form
    18,988.56/26,199.03 = 13,021.69/x
  3. Step 3: Cross multiply
    18,988.56x = 26,199.03 × 13,021.69
  4. Step 4: Simplify right side
    18,988.56x = 341,155,646.96
  5. Step 5: Solve for x
    x = 341,155,646.96/18,988.56
  6. Step 6: Final answer
    x = 17,966.38

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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.