Home / 21,779.38-30,053.85-12,349.46

Finding the Fourth Proportional to 21,779.38, 30,053.85 and 12,349.46

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Solution

The fourth proportional to 21,779.38, 30,053.85 and 12,349.46 is: 17,041.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.38 : 30,053.85 = 12,349.46 : x
  2. Step 2: Convert to fraction form
    21,779.38/30,053.85 = 12,349.46/x
  3. Step 3: Cross multiply
    21,779.38x = 30,053.85 × 12,349.46
  4. Step 4: Simplify right side
    21,779.38x = 371,148,818.42
  5. Step 5: Solve for x
    x = 371,148,818.42/21,779.38
  6. Step 6: Final answer
    x = 17,041.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.