Home / 15,747.38-21,749.40-10,703.10

Finding the Fourth Proportional to 15,747.38, 21,749.40 and 10,703.10

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Solution

The fourth proportional to 15,747.38, 21,749.40 and 10,703.10 is: 14,782.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,747.38 : 21,749.40 = 10,703.10 : x
  2. Step 2: Convert to fraction form
    15,747.38/21,749.40 = 10,703.10/x
  3. Step 3: Cross multiply
    15,747.38x = 21,749.40 × 10,703.10
  4. Step 4: Simplify right side
    15,747.38x = 232,786,003.14
  5. Step 5: Solve for x
    x = 232,786,003.14/15,747.38
  6. Step 6: Final answer
    x = 14,782.53

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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.