Home / 15,768.47-21,769.40-10,470.53

Finding the Fourth Proportional to 15,768.47, 21,769.40 and 10,470.53

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Solution

The fourth proportional to 15,768.47, 21,769.40 and 10,470.53 is: 14,455.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.47 : 21,769.40 = 10,470.53 : x
  2. Step 2: Convert to fraction form
    15,768.47/21,769.40 = 10,470.53/x
  3. Step 3: Cross multiply
    15,768.47x = 21,769.40 × 10,470.53
  4. Step 4: Simplify right side
    15,768.47x = 227,937,236.38
  5. Step 5: Solve for x
    x = 227,937,236.38/15,768.47
  6. Step 6: Final answer
    x = 14,455.25

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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.