Home / 17,779.40-24,558.98-13,638.76

Finding the Fourth Proportional to 17,779.40, 24,558.98 and 13,638.76

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Solution

The fourth proportional to 17,779.40, 24,558.98 and 13,638.76 is: 18,839.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,779.40 : 24,558.98 = 13,638.76 : x
  2. Step 2: Convert to fraction form
    17,779.40/24,558.98 = 13,638.76/x
  3. Step 3: Cross multiply
    17,779.40x = 24,558.98 × 13,638.76
  4. Step 4: Simplify right side
    17,779.40x = 334,954,034.06
  5. Step 5: Solve for x
    x = 334,954,034.06/17,779.40
  6. Step 6: Final answer
    x = 18,839.45

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Double scale
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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.