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Finding the Fourth Proportional to 15,807.88, 21,816.02 and 9,095.60

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Solution

The fourth proportional to 15,807.88, 21,816.02 and 9,095.60 is: 12,552.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,807.88 : 21,816.02 = 9,095.60 : x
  2. Step 2: Convert to fraction form
    15,807.88/21,816.02 = 9,095.60/x
  3. Step 3: Cross multiply
    15,807.88x = 21,816.02 × 9,095.60
  4. Step 4: Simplify right side
    15,807.88x = 198,429,791.51
  5. Step 5: Solve for x
    x = 198,429,791.51/15,807.88
  6. Step 6: Final answer
    x = 12,552.59

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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.