Home / 13,561.91-20,346.54-12,260.65

Finding the Fourth Proportional to 13,561.91, 20,346.54 and 12,260.65

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Solution

The fourth proportional to 13,561.91, 20,346.54 and 12,260.65 is: 18,394.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.91 : 20,346.54 = 12,260.65 : x
  2. Step 2: Convert to fraction form
    13,561.91/20,346.54 = 12,260.65/x
  3. Step 3: Cross multiply
    13,561.91x = 20,346.54 × 12,260.65
  4. Step 4: Simplify right side
    13,561.91x = 249,461,805.65
  5. Step 5: Solve for x
    x = 249,461,805.65/13,561.91
  6. Step 6: Final answer
    x = 18,394.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.