Home / 21,217.19-31,779.02-14,164.16

Finding the Fourth Proportional to 21,217.19, 31,779.02 and 14,164.16

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Solution

The fourth proportional to 21,217.19, 31,779.02 and 14,164.16 is: 21,215.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.19 : 31,779.02 = 14,164.16 : x
  2. Step 2: Convert to fraction form
    21,217.19/31,779.02 = 14,164.16/x
  3. Step 3: Cross multiply
    21,217.19x = 31,779.02 × 14,164.16
  4. Step 4: Simplify right side
    21,217.19x = 450,123,000.44
  5. Step 5: Solve for x
    x = 450,123,000.44/21,217.19
  6. Step 6: Final answer
    x = 21,215.02

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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.