Home / 21,460.08-32,118.12-20,642.16

Finding the Fourth Proportional to 21,460.08, 32,118.12 and 20,642.16

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Solution

The fourth proportional to 21,460.08, 32,118.12 and 20,642.16 is: 30,893.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,460.08 : 32,118.12 = 20,642.16 : x
  2. Step 2: Convert to fraction form
    21,460.08/32,118.12 = 20,642.16/x
  3. Step 3: Cross multiply
    21,460.08x = 32,118.12 × 20,642.16
  4. Step 4: Simplify right side
    21,460.08x = 662,987,371.94
  5. Step 5: Solve for x
    x = 662,987,371.94/21,460.08
  6. Step 6: Final answer
    x = 30,893.98

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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.