Home / 20,266.13-27,967.73-12,712.78

Finding the Fourth Proportional to 20,266.13, 27,967.73 and 12,712.78

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Solution

The fourth proportional to 20,266.13, 27,967.73 and 12,712.78 is: 17,543.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.13 : 27,967.73 = 12,712.78 : x
  2. Step 2: Convert to fraction form
    20,266.13/27,967.73 = 12,712.78/x
  3. Step 3: Cross multiply
    20,266.13x = 27,967.73 × 12,712.78
  4. Step 4: Simplify right side
    20,266.13x = 355,547,395.19
  5. Step 5: Solve for x
    x = 355,547,395.19/20,266.13
  6. Step 6: Final answer
    x = 17,543.92

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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.