Home / 10,085.18-15,135.59-6,986.89

Finding the Fourth Proportional to 10,085.18, 15,135.59 and 6,986.89

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Solution

The fourth proportional to 10,085.18, 15,135.59 and 6,986.89 is: 10,485.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.18 : 15,135.59 = 6,986.89 : x
  2. Step 2: Convert to fraction form
    10,085.18/15,135.59 = 6,986.89/x
  3. Step 3: Cross multiply
    10,085.18x = 15,135.59 × 6,986.89
  4. Step 4: Simplify right side
    10,085.18x = 105,750,738.80
  5. Step 5: Solve for x
    x = 105,750,738.80/10,085.18
  6. Step 6: Final answer
    x = 10,485.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.