Home / 10,478.07-15,716.16-6,289.95

Finding the Fourth Proportional to 10,478.07, 15,716.16 and 6,289.95

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Solution

The fourth proportional to 10,478.07, 15,716.16 and 6,289.95 is: 9,434.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.07 : 15,716.16 = 6,289.95 : x
  2. Step 2: Convert to fraction form
    10,478.07/15,716.16 = 6,289.95/x
  3. Step 3: Cross multiply
    10,478.07x = 15,716.16 × 6,289.95
  4. Step 4: Simplify right side
    10,478.07x = 98,853,860.59
  5. Step 5: Solve for x
    x = 98,853,860.59/10,478.07
  6. Step 6: Final answer
    x = 9,434.36

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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.