Home / 21,106.08-31,629.96-18,326.16

Finding the Fourth Proportional to 21,106.08, 31,629.96 and 18,326.16

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Solution

The fourth proportional to 21,106.08, 31,629.96 and 18,326.16 is: 27,463.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.08 : 31,629.96 = 18,326.16 : x
  2. Step 2: Convert to fraction form
    21,106.08/31,629.96 = 18,326.16/x
  3. Step 3: Cross multiply
    21,106.08x = 31,629.96 × 18,326.16
  4. Step 4: Simplify right side
    21,106.08x = 579,655,707.75
  5. Step 5: Solve for x
    x = 579,655,707.75/21,106.08
  6. Step 6: Final answer
    x = 27,463.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.