Home / 9,986.12-13,780.80-5,510.15

Finding the Fourth Proportional to 9,986.12, 13,780.80 and 5,510.15

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Solution

The fourth proportional to 9,986.12, 13,780.80 and 5,510.15 is: 7,603.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.12 : 13,780.80 = 5,510.15 : x
  2. Step 2: Convert to fraction form
    9,986.12/13,780.80 = 5,510.15/x
  3. Step 3: Cross multiply
    9,986.12x = 13,780.80 × 5,510.15
  4. Step 4: Simplify right side
    9,986.12x = 75,934,206.22
  5. Step 5: Solve for x
    x = 75,934,206.22/9,986.12
  6. Step 6: Final answer
    x = 7,603.98

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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.