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Finding the Fourth Proportional to 10,316.58, 15,491.79 and 9,790.71

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Solution

The fourth proportional to 10,316.58, 15,491.79 and 9,790.71 is: 14,702.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,316.58 : 15,491.79 = 9,790.71 : x
  2. Step 2: Convert to fraction form
    10,316.58/15,491.79 = 9,790.71/x
  3. Step 3: Cross multiply
    10,316.58x = 15,491.79 × 9,790.71
  4. Step 4: Simplify right side
    10,316.58x = 151,675,623.27
  5. Step 5: Solve for x
    x = 151,675,623.27/10,316.58
  6. Step 6: Final answer
    x = 14,702.12

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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.