Home / 15,779.21-21,770.22-10,475.05

Finding the Fourth Proportional to 15,779.21, 21,770.22 and 10,475.05

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Solution

The fourth proportional to 15,779.21, 21,770.22 and 10,475.05 is: 14,452.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,779.21 : 21,770.22 = 10,475.05 : x
  2. Step 2: Convert to fraction form
    15,779.21/21,770.22 = 10,475.05/x
  3. Step 3: Cross multiply
    15,779.21x = 21,770.22 × 10,475.05
  4. Step 4: Simplify right side
    15,779.21x = 228,044,048.54
  5. Step 5: Solve for x
    x = 228,044,048.54/15,779.21
  6. Step 6: Final answer
    x = 14,452.19

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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.