Home / 15,687.54-21,636.81-10,655.64

Finding the Fourth Proportional to 15,687.54, 21,636.81 and 10,655.64

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Solution

The fourth proportional to 15,687.54, 21,636.81 and 10,655.64 is: 14,696.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,687.54 : 21,636.81 = 10,655.64 : x
  2. Step 2: Convert to fraction form
    15,687.54/21,636.81 = 10,655.64/x
  3. Step 3: Cross multiply
    15,687.54x = 21,636.81 × 10,655.64
  4. Step 4: Simplify right side
    15,687.54x = 230,554,058.11
  5. Step 5: Solve for x
    x = 230,554,058.11/15,687.54
  6. Step 6: Final answer
    x = 14,696.64

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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.