Home / 15,749.12-21,696-10,772.48

Finding the Fourth Proportional to 15,749.12, 21,696 and 10,772.48

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Solution

The fourth proportional to 15,749.12, 21,696 and 10,772.48 is: 14,840.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.12 : 21,696 = 10,772.48 : x
  2. Step 2: Convert to fraction form
    15,749.12/21,696 = 10,772.48/x
  3. Step 3: Cross multiply
    15,749.12x = 21,696 × 10,772.48
  4. Step 4: Simplify right side
    15,749.12x = 233,719,726.08
  5. Step 5: Solve for x
    x = 233,719,726.08/15,749.12
  6. Step 6: Final answer
    x = 14,840.18

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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.