Home / 28,028.16-42,013.89-18,173.70

Finding the Fourth Proportional to 28,028.16, 42,013.89 and 18,173.70

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Solution

The fourth proportional to 28,028.16, 42,013.89 and 18,173.70 is: 27,242.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.16 : 42,013.89 = 18,173.70 : x
  2. Step 2: Convert to fraction form
    28,028.16/42,013.89 = 18,173.70/x
  3. Step 3: Cross multiply
    28,028.16x = 42,013.89 × 18,173.70
  4. Step 4: Simplify right side
    28,028.16x = 763,547,832.69
  5. Step 5: Solve for x
    x = 763,547,832.69/28,028.16
  6. Step 6: Final answer
    x = 27,242.17

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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.