Home / 9,985.11-13,780.23-5,509.26

Finding the Fourth Proportional to 9,985.11, 13,780.23 and 5,509.26

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Solution

The fourth proportional to 9,985.11, 13,780.23 and 5,509.26 is: 7,603.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.11 : 13,780.23 = 5,509.26 : x
  2. Step 2: Convert to fraction form
    9,985.11/13,780.23 = 5,509.26/x
  3. Step 3: Cross multiply
    9,985.11x = 13,780.23 × 5,509.26
  4. Step 4: Simplify right side
    9,985.11x = 75,918,869.93
  5. Step 5: Solve for x
    x = 75,918,869.93/9,985.11
  6. Step 6: Final answer
    x = 7,603.21

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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.