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Finding the Fourth Proportional to 15,036.76, 20,751.06 and 9,740.79

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Solution

The fourth proportional to 15,036.76, 20,751.06 and 9,740.79 is: 13,442.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036.76 : 20,751.06 = 9,740.79 : x
  2. Step 2: Convert to fraction form
    15,036.76/20,751.06 = 9,740.79/x
  3. Step 3: Cross multiply
    15,036.76x = 20,751.06 × 9,740.79
  4. Step 4: Simplify right side
    15,036.76x = 202,131,717.74
  5. Step 5: Solve for x
    x = 202,131,717.74/15,036.76
  6. Step 6: Final answer
    x = 13,442.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.