Home / 15,588.97-21,519.86-9,931.48

Finding the Fourth Proportional to 15,588.97, 21,519.86 and 9,931.48

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Solution

The fourth proportional to 15,588.97, 21,519.86 and 9,931.48 is: 13,709.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,588.97 : 21,519.86 = 9,931.48 : x
  2. Step 2: Convert to fraction form
    15,588.97/21,519.86 = 9,931.48/x
  3. Step 3: Cross multiply
    15,588.97x = 21,519.86 × 9,931.48
  4. Step 4: Simplify right side
    15,588.97x = 213,724,030.22
  5. Step 5: Solve for x
    x = 213,724,030.22/15,588.97
  6. Step 6: Final answer
    x = 13,709.95

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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.