Home / 15,657.36-21,590.28-11,887.44

Finding the Fourth Proportional to 15,657.36, 21,590.28 and 11,887.44

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Solution

The fourth proportional to 15,657.36, 21,590.28 and 11,887.44 is: 16,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.36 : 21,590.28 = 11,887.44 : x
  2. Step 2: Convert to fraction form
    15,657.36/21,590.28 = 11,887.44/x
  3. Step 3: Cross multiply
    15,657.36x = 21,590.28 × 11,887.44
  4. Step 4: Simplify right side
    15,657.36x = 256,653,158.08
  5. Step 5: Solve for x
    x = 256,653,158.08/15,657.36
  6. Step 6: Final answer
    x = 16,391.85

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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.