Home / 14,747.40-20,349.90-8,779.32

Finding the Fourth Proportional to 14,747.40, 20,349.90 and 8,779.32

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Solution

The fourth proportional to 14,747.40, 20,349.90 and 8,779.32 is: 12,114.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,747.40 : 20,349.90 = 8,779.32 : x
  2. Step 2: Convert to fraction form
    14,747.40/20,349.90 = 8,779.32/x
  3. Step 3: Cross multiply
    14,747.40x = 20,349.90 × 8,779.32
  4. Step 4: Simplify right side
    14,747.40x = 178,658,284.07
  5. Step 5: Solve for x
    x = 178,658,284.07/14,747.40
  6. Step 6: Final answer
    x = 12,114.56

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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.