Home / 20,127.48-27,776.01-12,578.19

Finding the Fourth Proportional to 20,127.48, 27,776.01 and 12,578.19

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Solution

The fourth proportional to 20,127.48, 27,776.01 and 12,578.19 is: 17,357.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.48 : 27,776.01 = 12,578.19 : x
  2. Step 2: Convert to fraction form
    20,127.48/27,776.01 = 12,578.19/x
  3. Step 3: Cross multiply
    20,127.48x = 27,776.01 × 12,578.19
  4. Step 4: Simplify right side
    20,127.48x = 349,371,931.22
  5. Step 5: Solve for x
    x = 349,371,931.22/20,127.48
  6. Step 6: Final answer
    x = 17,357.96

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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.