Home / 9,985.23-13,779-5,508.98

Finding the Fourth Proportional to 9,985.23, 13,779 and 5,508.98

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Solution

The fourth proportional to 9,985.23, 13,779 and 5,508.98 is: 7,602.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.23 : 13,779 = 5,508.98 : x
  2. Step 2: Convert to fraction form
    9,985.23/13,779 = 5,508.98/x
  3. Step 3: Cross multiply
    9,985.23x = 13,779 × 5,508.98
  4. Step 4: Simplify right side
    9,985.23x = 75,908,166.53
  5. Step 5: Solve for x
    x = 75,908,166.53/9,985.23
  6. Step 6: Final answer
    x = 7,602.04

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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.