Home / 15,319.65-21,140.33-8,605.56

Finding the Fourth Proportional to 15,319.65, 21,140.33 and 8,605.56

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Solution

The fourth proportional to 15,319.65, 21,140.33 and 8,605.56 is: 11,875.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.65 : 21,140.33 = 8,605.56 : x
  2. Step 2: Convert to fraction form
    15,319.65/21,140.33 = 8,605.56/x
  3. Step 3: Cross multiply
    15,319.65x = 21,140.33 × 8,605.56
  4. Step 4: Simplify right side
    15,319.65x = 181,924,335.21
  5. Step 5: Solve for x
    x = 181,924,335.21/15,319.65
  6. Step 6: Final answer
    x = 11,875.23

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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.