Home / 10,666.88-15,993.47-4,431.20

Finding the Fourth Proportional to 10,666.88, 15,993.47 and 4,431.20

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Solution

The fourth proportional to 10,666.88, 15,993.47 and 4,431.20 is: 6,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,666.88 : 15,993.47 = 4,431.20 : x
  2. Step 2: Convert to fraction form
    10,666.88/15,993.47 = 4,431.20/x
  3. Step 3: Cross multiply
    10,666.88x = 15,993.47 × 4,431.20
  4. Step 4: Simplify right side
    10,666.88x = 70,870,264.26
  5. Step 5: Solve for x
    x = 70,870,264.26/10,666.88
  6. Step 6: Final answer
    x = 6,643.95

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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.