Home / 27,849.99-38,437.80-21,124.35

Finding the Fourth Proportional to 27,849.99, 38,437.80 and 21,124.35

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Solution

The fourth proportional to 27,849.99, 38,437.80 and 21,124.35 is: 29,155.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,849.99 : 38,437.80 = 21,124.35 : x
  2. Step 2: Convert to fraction form
    27,849.99/38,437.80 = 21,124.35/x
  3. Step 3: Cross multiply
    27,849.99x = 38,437.80 × 21,124.35
  4. Step 4: Simplify right side
    27,849.99x = 811,973,540.43
  5. Step 5: Solve for x
    x = 811,973,540.43/27,849.99
  6. Step 6: Final answer
    x = 29,155.25

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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.