Home / 14,779.12-20,280.40-13,442.64

Finding the Fourth Proportional to 14,779.12, 20,280.40 and 13,442.64

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Solution

The fourth proportional to 14,779.12, 20,280.40 and 13,442.64 is: 18,446.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.12 : 20,280.40 = 13,442.64 : x
  2. Step 2: Convert to fraction form
    14,779.12/20,280.40 = 13,442.64/x
  3. Step 3: Cross multiply
    14,779.12x = 20,280.40 × 13,442.64
  4. Step 4: Simplify right side
    14,779.12x = 272,622,116.26
  5. Step 5: Solve for x
    x = 272,622,116.26/14,779.12
  6. Step 6: Final answer
    x = 18,446.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.