Home / 18,986.90-26,177.35-13,007.89

Finding the Fourth Proportional to 18,986.90, 26,177.35 and 13,007.89

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Solution

The fourth proportional to 18,986.90, 26,177.35 and 13,007.89 is: 17,934.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.90 : 26,177.35 = 13,007.89 : x
  2. Step 2: Convert to fraction form
    18,986.90/26,177.35 = 13,007.89/x
  3. Step 3: Cross multiply
    18,986.90x = 26,177.35 × 13,007.89
  4. Step 4: Simplify right side
    18,986.90x = 340,512,089.29
  5. Step 5: Solve for x
    x = 340,512,089.29/18,986.90
  6. Step 6: Final answer
    x = 17,934.05

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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.