Home / 12,779.16-17,635.23-7,113.78

Finding the Fourth Proportional to 12,779.16, 17,635.23 and 7,113.78

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Solution

The fourth proportional to 12,779.16, 17,635.23 and 7,113.78 is: 9,817.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.16 : 17,635.23 = 7,113.78 : x
  2. Step 2: Convert to fraction form
    12,779.16/17,635.23 = 7,113.78/x
  3. Step 3: Cross multiply
    12,779.16x = 17,635.23 × 7,113.78
  4. Step 4: Simplify right side
    12,779.16x = 125,453,146.47
  5. Step 5: Solve for x
    x = 125,453,146.47/12,779.16
  6. Step 6: Final answer
    x = 9,817.01

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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.