Home / 19,357.80-26,712.72-11,398.20

Finding the Fourth Proportional to 19,357.80, 26,712.72 and 11,398.20

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Solution

The fourth proportional to 19,357.80, 26,712.72 and 11,398.20 is: 15,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,357.80 : 26,712.72 = 11,398.20 : x
  2. Step 2: Convert to fraction form
    19,357.80/26,712.72 = 11,398.20/x
  3. Step 3: Cross multiply
    19,357.80x = 26,712.72 × 11,398.20
  4. Step 4: Simplify right side
    19,357.80x = 304,476,925.10
  5. Step 5: Solve for x
    x = 304,476,925.10/19,357.80
  6. Step 6: Final answer
    x = 15,728.90

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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.