Home / 28,918.19-39,903.57-15,995.72

Finding the Fourth Proportional to 28,918.19, 39,903.57 and 15,995.72

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Solution

The fourth proportional to 28,918.19, 39,903.57 and 15,995.72 is: 22,072.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.19 : 39,903.57 = 15,995.72 : x
  2. Step 2: Convert to fraction form
    28,918.19/39,903.57 = 15,995.72/x
  3. Step 3: Cross multiply
    28,918.19x = 39,903.57 × 15,995.72
  4. Step 4: Simplify right side
    28,918.19x = 638,286,133.20
  5. Step 5: Solve for x
    x = 638,286,133.20/28,918.19
  6. Step 6: Final answer
    x = 22,072.14

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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.