Home / 10,890.83-15,037.81-8,368.97

Finding the Fourth Proportional to 10,890.83, 15,037.81 and 8,368.97

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Solution

The fourth proportional to 10,890.83, 15,037.81 and 8,368.97 is: 11,555.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.83 : 15,037.81 = 8,368.97 : x
  2. Step 2: Convert to fraction form
    10,890.83/15,037.81 = 8,368.97/x
  3. Step 3: Cross multiply
    10,890.83x = 15,037.81 × 8,368.97
  4. Step 4: Simplify right side
    10,890.83x = 125,850,980.76
  5. Step 5: Solve for x
    x = 125,850,980.76/10,890.83
  6. Step 6: Final answer
    x = 11,555.68

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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.