Home / 21,785.29-30,066.19-12,832.63

Finding the Fourth Proportional to 21,785.29, 30,066.19 and 12,832.63

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Solution

The fourth proportional to 21,785.29, 30,066.19 and 12,832.63 is: 17,710.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.29 : 30,066.19 = 12,832.63 : x
  2. Step 2: Convert to fraction form
    21,785.29/30,066.19 = 12,832.63/x
  3. Step 3: Cross multiply
    21,785.29x = 30,066.19 × 12,832.63
  4. Step 4: Simplify right side
    21,785.29x = 385,828,184.53
  5. Step 5: Solve for x
    x = 385,828,184.53/21,785.29
  6. Step 6: Final answer
    x = 17,710.49

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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.