Home / 13,581.69-18,744.45-7,916.70

Finding the Fourth Proportional to 13,581.69, 18,744.45 and 7,916.70

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Solution

The fourth proportional to 13,581.69, 18,744.45 and 7,916.70 is: 10,926.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.69 : 18,744.45 = 7,916.70 : x
  2. Step 2: Convert to fraction form
    13,581.69/18,744.45 = 7,916.70/x
  3. Step 3: Cross multiply
    13,581.69x = 18,744.45 × 7,916.70
  4. Step 4: Simplify right side
    13,581.69x = 148,394,187.32
  5. Step 5: Solve for x
    x = 148,394,187.32/13,581.69
  6. Step 6: Final answer
    x = 10,926.05

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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.