Home / 12,779.04-17,643.90-8,001.12

Finding the Fourth Proportional to 12,779.04, 17,643.90 and 8,001.12

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Solution

The fourth proportional to 12,779.04, 17,643.90 and 8,001.12 is: 11,047.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.04 : 17,643.90 = 8,001.12 : x
  2. Step 2: Convert to fraction form
    12,779.04/17,643.90 = 8,001.12/x
  3. Step 3: Cross multiply
    12,779.04x = 17,643.90 × 8,001.12
  4. Step 4: Simplify right side
    12,779.04x = 141,170,961.17
  5. Step 5: Solve for x
    x = 141,170,961.17/12,779.04
  6. Step 6: Final answer
    x = 11,047.07

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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.