Home / 27,848.99-38,436.42-21,123.35

Finding the Fourth Proportional to 27,848.99, 38,436.42 and 21,123.35

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Solution

The fourth proportional to 27,848.99, 38,436.42 and 21,123.35 is: 29,153.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,848.99 : 38,436.42 = 21,123.35 : x
  2. Step 2: Convert to fraction form
    27,848.99/38,436.42 = 21,123.35/x
  3. Step 3: Cross multiply
    27,848.99x = 38,436.42 × 21,123.35
  4. Step 4: Simplify right side
    27,848.99x = 811,905,760.22
  5. Step 5: Solve for x
    x = 811,905,760.22/27,848.99
  6. Step 6: Final answer
    x = 29,153.87

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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.