Home / 12,779.28-19,168.98-4,459.26

Finding the Fourth Proportional to 12,779.28, 19,168.98 and 4,459.26

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Solution

The fourth proportional to 12,779.28, 19,168.98 and 4,459.26 is: 6,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.28 : 19,168.98 = 4,459.26 : x
  2. Step 2: Convert to fraction form
    12,779.28/19,168.98 = 4,459.26/x
  3. Step 3: Cross multiply
    12,779.28x = 19,168.98 × 4,459.26
  4. Step 4: Simplify right side
    12,779.28x = 85,479,465.75
  5. Step 5: Solve for x
    x = 85,479,465.75/12,779.28
  6. Step 6: Final answer
    x = 6,688.91

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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.