Home / 10,428.63-15,644.91-4,189.13

Finding the Fourth Proportional to 10,428.63, 15,644.91 and 4,189.13

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Solution

The fourth proportional to 10,428.63, 15,644.91 and 4,189.13 is: 6,284.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.63 : 15,644.91 = 4,189.13 : x
  2. Step 2: Convert to fraction form
    10,428.63/15,644.91 = 4,189.13/x
  3. Step 3: Cross multiply
    10,428.63x = 15,644.91 × 4,189.13
  4. Step 4: Simplify right side
    10,428.63x = 65,538,561.83
  5. Step 5: Solve for x
    x = 65,538,561.83/10,428.63
  6. Step 6: Final answer
    x = 6,284.48

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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.