Home / 13,290.68-19,779.14-12,847.75

Finding the Fourth Proportional to 13,290.68, 19,779.14 and 12,847.75

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Solution

The fourth proportional to 13,290.68, 19,779.14 and 12,847.75 is: 19,119.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.68 : 19,779.14 = 12,847.75 : x
  2. Step 2: Convert to fraction form
    13,290.68/19,779.14 = 12,847.75/x
  3. Step 3: Cross multiply
    13,290.68x = 19,779.14 × 12,847.75
  4. Step 4: Simplify right side
    13,290.68x = 254,117,356.34
  5. Step 5: Solve for x
    x = 254,117,356.34/13,290.68
  6. Step 6: Final answer
    x = 19,119.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.