Home / 21,071.08-31,537.50-18,767.08

Finding the Fourth Proportional to 21,071.08, 31,537.50 and 18,767.08

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Solution

The fourth proportional to 21,071.08, 31,537.50 and 18,767.08 is: 28,089.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.08 : 31,537.50 = 18,767.08 : x
  2. Step 2: Convert to fraction form
    21,071.08/31,537.50 = 18,767.08/x
  3. Step 3: Cross multiply
    21,071.08x = 31,537.50 × 18,767.08
  4. Step 4: Simplify right side
    21,071.08x = 591,866,785.50
  5. Step 5: Solve for x
    x = 591,866,785.50/21,071.08
  6. Step 6: Final answer
    x = 28,089.06

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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.