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Finding the Fourth Proportional to 10,505.30, 15,696.99 and 7,955.62

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Solution

The fourth proportional to 10,505.30, 15,696.99 and 7,955.62 is: 11,887.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.30 : 15,696.99 = 7,955.62 : x
  2. Step 2: Convert to fraction form
    10,505.30/15,696.99 = 7,955.62/x
  3. Step 3: Cross multiply
    10,505.30x = 15,696.99 × 7,955.62
  4. Step 4: Simplify right side
    10,505.30x = 124,879,248.34
  5. Step 5: Solve for x
    x = 124,879,248.34/10,505.30
  6. Step 6: Final answer
    x = 11,887.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.