Home / 19,408.80-26,779.84-13,430.88

Finding the Fourth Proportional to 19,408.80, 26,779.84 and 13,430.88

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Solution

The fourth proportional to 19,408.80, 26,779.84 and 13,430.88 is: 18,531.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,408.80 : 26,779.84 = 13,430.88 : x
  2. Step 2: Convert to fraction form
    19,408.80/26,779.84 = 13,430.88/x
  3. Step 3: Cross multiply
    19,408.80x = 26,779.84 × 13,430.88
  4. Step 4: Simplify right side
    19,408.80x = 359,676,817.46
  5. Step 5: Solve for x
    x = 359,676,817.46/19,408.80
  6. Step 6: Final answer
    x = 18,531.64

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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.