Home / 12,590.40-17,357.58-9,227.28

Finding the Fourth Proportional to 12,590.40, 17,357.58 and 9,227.28

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Solution

The fourth proportional to 12,590.40, 17,357.58 and 9,227.28 is: 12,721.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.40 : 17,357.58 = 9,227.28 : x
  2. Step 2: Convert to fraction form
    12,590.40/17,357.58 = 9,227.28/x
  3. Step 3: Cross multiply
    12,590.40x = 17,357.58 × 9,227.28
  4. Step 4: Simplify right side
    12,590.40x = 160,163,250.78
  5. Step 5: Solve for x
    x = 160,163,250.78/12,590.40
  6. Step 6: Final answer
    x = 12,721.06

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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.