Home / 10,521.80-15,778.60-3,944.40

Finding the Fourth Proportional to 10,521.80, 15,778.60 and 3,944.40

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Solution

The fourth proportional to 10,521.80, 15,778.60 and 3,944.40 is: 5,915.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521.80 : 15,778.60 = 3,944.40 : x
  2. Step 2: Convert to fraction form
    10,521.80/15,778.60 = 3,944.40/x
  3. Step 3: Cross multiply
    10,521.80x = 15,778.60 × 3,944.40
  4. Step 4: Simplify right side
    10,521.80x = 62,237,040.81
  5. Step 5: Solve for x
    x = 62,237,040.81/10,521.80
  6. Step 6: Final answer
    x = 5,915.06

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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.