Home / 12,948.72-19,386.15-8,779.75

Finding the Fourth Proportional to 12,948.72, 19,386.15 and 8,779.75

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Solution

The fourth proportional to 12,948.72, 19,386.15 and 8,779.75 is: 13,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,948.72 : 19,386.15 = 8,779.75 : x
  2. Step 2: Convert to fraction form
    12,948.72/19,386.15 = 8,779.75/x
  3. Step 3: Cross multiply
    12,948.72x = 19,386.15 × 8,779.75
  4. Step 4: Simplify right side
    12,948.72x = 170,205,550.46
  5. Step 5: Solve for x
    x = 170,205,550.46/12,948.72
  6. Step 6: Final answer
    x = 13,144.58

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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.