Home / 21,987.30-32,908.05-15,426.30

Finding the Fourth Proportional to 21,987.30, 32,908.05 and 15,426.30

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Solution

The fourth proportional to 21,987.30, 32,908.05 and 15,426.30 is: 23,088.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987.30 : 32,908.05 = 15,426.30 : x
  2. Step 2: Convert to fraction form
    21,987.30/32,908.05 = 15,426.30/x
  3. Step 3: Cross multiply
    21,987.30x = 32,908.05 × 15,426.30
  4. Step 4: Simplify right side
    21,987.30x = 507,649,451.72
  5. Step 5: Solve for x
    x = 507,649,451.72/21,987.30
  6. Step 6: Final answer
    x = 23,088.30

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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.