Home / 15,643.19-21,587.61-8,569.64

Finding the Fourth Proportional to 15,643.19, 21,587.61 and 8,569.64

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Solution

The fourth proportional to 15,643.19, 21,587.61 and 8,569.64 is: 11,826.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.19 : 21,587.61 = 8,569.64 : x
  2. Step 2: Convert to fraction form
    15,643.19/21,587.61 = 8,569.64/x
  3. Step 3: Cross multiply
    15,643.19x = 21,587.61 × 8,569.64
  4. Step 4: Simplify right side
    15,643.19x = 184,998,046.16
  5. Step 5: Solve for x
    x = 184,998,046.16/15,643.19
  6. Step 6: Final answer
    x = 11,826.11

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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.