Home / 18,890.11-26,061.55-10,821.63

Finding the Fourth Proportional to 18,890.11, 26,061.55 and 10,821.63

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Solution

The fourth proportional to 18,890.11, 26,061.55 and 10,821.63 is: 14,929.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.11 : 26,061.55 = 10,821.63 : x
  2. Step 2: Convert to fraction form
    18,890.11/26,061.55 = 10,821.63/x
  3. Step 3: Cross multiply
    18,890.11x = 26,061.55 × 10,821.63
  4. Step 4: Simplify right side
    18,890.11x = 282,028,522.00
  5. Step 5: Solve for x
    x = 282,028,522.00/18,890.11
  6. Step 6: Final answer
    x = 14,929.96

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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.