Home / 31,988.13-44,148.33-20,684.09

Finding the Fourth Proportional to 31,988.13, 44,148.33 and 20,684.09

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Solution

The fourth proportional to 31,988.13, 44,148.33 and 20,684.09 is: 28,547.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.13 : 44,148.33 = 20,684.09 : x
  2. Step 2: Convert to fraction form
    31,988.13/44,148.33 = 20,684.09/x
  3. Step 3: Cross multiply
    31,988.13x = 44,148.33 × 20,684.09
  4. Step 4: Simplify right side
    31,988.13x = 913,167,810.33
  5. Step 5: Solve for x
    x = 913,167,810.33/31,988.13
  6. Step 6: Final answer
    x = 28,547.08

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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.