Home / 21,986.40-32,987.70-8,848.20

Finding the Fourth Proportional to 21,986.40, 32,987.70 and 8,848.20

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Solution

The fourth proportional to 21,986.40, 32,987.70 and 8,848.20 is: 13,275.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.40 : 32,987.70 = 8,848.20 : x
  2. Step 2: Convert to fraction form
    21,986.40/32,987.70 = 8,848.20/x
  3. Step 3: Cross multiply
    21,986.40x = 32,987.70 × 8,848.20
  4. Step 4: Simplify right side
    21,986.40x = 291,881,767.14
  5. Step 5: Solve for x
    x = 291,881,767.14/21,986.40
  6. Step 6: Final answer
    x = 13,275.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.