Home / 15,664.28-21,616.73-8,590.74

Finding the Fourth Proportional to 15,664.28, 21,616.73 and 8,590.74

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Solution

The fourth proportional to 15,664.28, 21,616.73 and 8,590.74 is: 11,855.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.28 : 21,616.73 = 8,590.74 : x
  2. Step 2: Convert to fraction form
    15,664.28/21,616.73 = 8,590.74/x
  3. Step 3: Cross multiply
    15,664.28x = 21,616.73 × 8,590.74
  4. Step 4: Simplify right side
    15,664.28x = 185,703,664.13
  5. Step 5: Solve for x
    x = 185,703,664.13/15,664.28
  6. Step 6: Final answer
    x = 11,855.24

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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.