Home / 19,803.12-27,332.16-13,089.12

Finding the Fourth Proportional to 19,803.12, 27,332.16 and 13,089.12

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Solution

The fourth proportional to 19,803.12, 27,332.16 and 13,089.12 is: 18,065.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,803.12 : 27,332.16 = 13,089.12 : x
  2. Step 2: Convert to fraction form
    19,803.12/27,332.16 = 13,089.12/x
  3. Step 3: Cross multiply
    19,803.12x = 27,332.16 × 13,089.12
  4. Step 4: Simplify right side
    19,803.12x = 357,753,922.10
  5. Step 5: Solve for x
    x = 357,753,922.10/19,803.12
  6. Step 6: Final answer
    x = 18,065.53

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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.