Home / 21,675.84-32,509.44-9,987.36

Finding the Fourth Proportional to 21,675.84, 32,509.44 and 9,987.36

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Solution

The fourth proportional to 21,675.84, 32,509.44 and 9,987.36 is: 14,979.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,675.84 : 32,509.44 = 9,987.36 : x
  2. Step 2: Convert to fraction form
    21,675.84/32,509.44 = 9,987.36/x
  3. Step 3: Cross multiply
    21,675.84x = 32,509.44 × 9,987.36
  4. Step 4: Simplify right side
    21,675.84x = 324,683,480.68
  5. Step 5: Solve for x
    x = 324,683,480.68/21,675.84
  6. Step 6: Final answer
    x = 14,979.05

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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.