Home / 19,486.90-26,891.56-10,988.89

Finding the Fourth Proportional to 19,486.90, 26,891.56 and 10,988.89

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Solution

The fourth proportional to 19,486.90, 26,891.56 and 10,988.89 is: 15,164.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,486.90 : 26,891.56 = 10,988.89 : x
  2. Step 2: Convert to fraction form
    19,486.90/26,891.56 = 10,988.89/x
  3. Step 3: Cross multiply
    19,486.90x = 26,891.56 × 10,988.89
  4. Step 4: Simplify right side
    19,486.90x = 295,508,394.77
  5. Step 5: Solve for x
    x = 295,508,394.77/19,486.90
  6. Step 6: Final answer
    x = 15,164.46

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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.