Home / 19,801.02-27,292.86-15,815.10

Finding the Fourth Proportional to 19,801.02, 27,292.86 and 15,815.10

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Solution

The fourth proportional to 19,801.02, 27,292.86 and 15,815.10 is: 21,798.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,801.02 : 27,292.86 = 15,815.10 : x
  2. Step 2: Convert to fraction form
    19,801.02/27,292.86 = 15,815.10/x
  3. Step 3: Cross multiply
    19,801.02x = 27,292.86 × 15,815.10
  4. Step 4: Simplify right side
    19,801.02x = 431,639,310.19
  5. Step 5: Solve for x
    x = 431,639,310.19/19,801.02
  6. Step 6: Final answer
    x = 21,798.84

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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.