Home / 15,565.51-21,479.92-8,759.91

Finding the Fourth Proportional to 15,565.51, 21,479.92 and 8,759.91

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Solution

The fourth proportional to 15,565.51, 21,479.92 and 8,759.91 is: 12,088.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.51 : 21,479.92 = 8,759.91 : x
  2. Step 2: Convert to fraction form
    15,565.51/21,479.92 = 8,759.91/x
  3. Step 3: Cross multiply
    15,565.51x = 21,479.92 × 8,759.91
  4. Step 4: Simplify right side
    15,565.51x = 188,162,166.01
  5. Step 5: Solve for x
    x = 188,162,166.01/15,565.51
  6. Step 6: Final answer
    x = 12,088.40

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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.