Home / 20,070.48-27,696.75-10,995.78

Finding the Fourth Proportional to 20,070.48, 27,696.75 and 10,995.78

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Solution

The fourth proportional to 20,070.48, 27,696.75 and 10,995.78 is: 15,173.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.48 : 27,696.75 = 10,995.78 : x
  2. Step 2: Convert to fraction form
    20,070.48/27,696.75 = 10,995.78/x
  3. Step 3: Cross multiply
    20,070.48x = 27,696.75 × 10,995.78
  4. Step 4: Simplify right side
    20,070.48x = 304,547,369.72
  5. Step 5: Solve for x
    x = 304,547,369.72/20,070.48
  6. Step 6: Final answer
    x = 15,173.90

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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.