Home / 10,890.33-15,037.12-8,368.47

Finding the Fourth Proportional to 10,890.33, 15,037.12 and 8,368.47

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Solution

The fourth proportional to 10,890.33, 15,037.12 and 8,368.47 is: 11,554.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.33 : 15,037.12 = 8,368.47 : x
  2. Step 2: Convert to fraction form
    10,890.33/15,037.12 = 8,368.47/x
  3. Step 3: Cross multiply
    10,890.33x = 15,037.12 × 8,368.47
  4. Step 4: Simplify right side
    10,890.33x = 125,837,687.61
  5. Step 5: Solve for x
    x = 125,837,687.61/10,890.33
  6. Step 6: Final answer
    x = 11,554.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.