Home / 14,240.20-19,508.75-13,707.78

Finding the Fourth Proportional to 14,240.20, 19,508.75 and 13,707.78

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Solution

The fourth proportional to 14,240.20, 19,508.75 and 13,707.78 is: 18,779.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,240.20 : 19,508.75 = 13,707.78 : x
  2. Step 2: Convert to fraction form
    14,240.20/19,508.75 = 13,707.78/x
  3. Step 3: Cross multiply
    14,240.20x = 19,508.75 × 13,707.78
  4. Step 4: Simplify right side
    14,240.20x = 267,421,653.08
  5. Step 5: Solve for x
    x = 267,421,653.08/14,240.20
  6. Step 6: Final answer
    x = 18,779.35

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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.