Home / 10,366.80-15,528.79-5,421.48

Finding the Fourth Proportional to 10,366.80, 15,528.79 and 5,421.48

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Solution

The fourth proportional to 10,366.80, 15,528.79 and 5,421.48 is: 8,121.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,366.80 : 15,528.79 = 5,421.48 : x
  2. Step 2: Convert to fraction form
    10,366.80/15,528.79 = 5,421.48/x
  3. Step 3: Cross multiply
    10,366.80x = 15,528.79 × 5,421.48
  4. Step 4: Simplify right side
    10,366.80x = 84,189,024.41
  5. Step 5: Solve for x
    x = 84,189,024.41/10,366.80
  6. Step 6: Final answer
    x = 8,121.02

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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.