Home / 27,821.95-38,411.81-19,321.35

Finding the Fourth Proportional to 27,821.95, 38,411.81 and 19,321.35

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Solution

The fourth proportional to 27,821.95, 38,411.81 and 19,321.35 is: 26,675.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,821.95 : 38,411.81 = 19,321.35 : x
  2. Step 2: Convert to fraction form
    27,821.95/38,411.81 = 19,321.35/x
  3. Step 3: Cross multiply
    27,821.95x = 38,411.81 × 19,321.35
  4. Step 4: Simplify right side
    27,821.95x = 742,167,856.95
  5. Step 5: Solve for x
    x = 742,167,856.95/27,821.95
  6. Step 6: Final answer
    x = 26,675.63

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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.