Home / 15,698.13-21,667.11-8,987.61

Finding the Fourth Proportional to 15,698.13, 21,667.11 and 8,987.61

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Solution

The fourth proportional to 15,698.13, 21,667.11 and 8,987.61 is: 12,405.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,698.13 : 21,667.11 = 8,987.61 : x
  2. Step 2: Convert to fraction form
    15,698.13/21,667.11 = 8,987.61/x
  3. Step 3: Cross multiply
    15,698.13x = 21,667.11 × 8,987.61
  4. Step 4: Simplify right side
    15,698.13x = 194,735,534.51
  5. Step 5: Solve for x
    x = 194,735,534.51/15,698.13
  6. Step 6: Final answer
    x = 12,405.01

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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.