Home / 15,645.36-21,590.47-8,475.10

Finding the Fourth Proportional to 15,645.36, 21,590.47 and 8,475.10

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Solution

The fourth proportional to 15,645.36, 21,590.47 and 8,475.10 is: 11,695.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.36 : 21,590.47 = 8,475.10 : x
  2. Step 2: Convert to fraction form
    15,645.36/21,590.47 = 8,475.10/x
  3. Step 3: Cross multiply
    15,645.36x = 21,590.47 × 8,475.10
  4. Step 4: Simplify right side
    15,645.36x = 182,981,392.30
  5. Step 5: Solve for x
    x = 182,981,392.30/15,645.36
  6. Step 6: Final answer
    x = 11,695.57

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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.