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Finding the Fourth Proportional to 15,019.53, 20,712.21 and 10,763.08

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Solution

The fourth proportional to 15,019.53, 20,712.21 and 10,763.08 is: 14,842.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,019.53 : 20,712.21 = 10,763.08 : x
  2. Step 2: Convert to fraction form
    15,019.53/20,712.21 = 10,763.08/x
  3. Step 3: Cross multiply
    15,019.53x = 20,712.21 × 10,763.08
  4. Step 4: Simplify right side
    15,019.53x = 222,927,081.06
  5. Step 5: Solve for x
    x = 222,927,081.06/15,019.53
  6. Step 6: Final answer
    x = 14,842.48

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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.