Home / 19,646.28-27,111.24-11,686.68

Finding the Fourth Proportional to 19,646.28, 27,111.24 and 11,686.68

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Solution

The fourth proportional to 19,646.28, 27,111.24 and 11,686.68 is: 16,127.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,646.28 : 27,111.24 = 11,686.68 : x
  2. Step 2: Convert to fraction form
    19,646.28/27,111.24 = 11,686.68/x
  3. Step 3: Cross multiply
    19,646.28x = 27,111.24 × 11,686.68
  4. Step 4: Simplify right side
    19,646.28x = 316,840,386.28
  5. Step 5: Solve for x
    x = 316,840,386.28/19,646.28
  6. Step 6: Final answer
    x = 16,127.25

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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.