Home / 14,712.98-20,287.42-13,779.86

Finding the Fourth Proportional to 14,712.98, 20,287.42 and 13,779.86

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Solution

The fourth proportional to 14,712.98, 20,287.42 and 13,779.86 is: 19,000.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,712.98 : 20,287.42 = 13,779.86 : x
  2. Step 2: Convert to fraction form
    14,712.98/20,287.42 = 13,779.86/x
  3. Step 3: Cross multiply
    14,712.98x = 20,287.42 × 13,779.86
  4. Step 4: Simplify right side
    14,712.98x = 279,557,807.36
  5. Step 5: Solve for x
    x = 279,557,807.36/14,712.98
  6. Step 6: Final answer
    x = 19,000.76

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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.