Home / 27,828.23-38,403.95-19,889.42

Finding the Fourth Proportional to 27,828.23, 38,403.95 and 19,889.42

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Solution

The fourth proportional to 27,828.23, 38,403.95 and 19,889.42 is: 27,448.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,828.23 : 38,403.95 = 19,889.42 : x
  2. Step 2: Convert to fraction form
    27,828.23/38,403.95 = 19,889.42/x
  3. Step 3: Cross multiply
    27,828.23x = 38,403.95 × 19,889.42
  4. Step 4: Simplify right side
    27,828.23x = 763,832,287.77
  5. Step 5: Solve for x
    x = 763,832,287.77/27,828.23
  6. Step 6: Final answer
    x = 27,448.11

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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.