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Finding the Fourth Proportional to 15,295.57, 21,109.49 and 8,583.01

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Solution

The fourth proportional to 15,295.57, 21,109.49 and 8,583.01 is: 11,845.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,295.57 : 21,109.49 = 8,583.01 : x
  2. Step 2: Convert to fraction form
    15,295.57/21,109.49 = 8,583.01/x
  3. Step 3: Cross multiply
    15,295.57x = 21,109.49 × 8,583.01
  4. Step 4: Simplify right side
    15,295.57x = 181,182,963.76
  5. Step 5: Solve for x
    x = 181,182,963.76/15,295.57
  6. Step 6: Final answer
    x = 11,845.45

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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.