Home / 15,883.95-21,920.24-8,810.67

Finding the Fourth Proportional to 15,883.95, 21,920.24 and 8,810.67

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Solution

The fourth proportional to 15,883.95, 21,920.24 and 8,810.67 is: 12,158.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,883.95 : 21,920.24 = 8,810.67 : x
  2. Step 2: Convert to fraction form
    15,883.95/21,920.24 = 8,810.67/x
  3. Step 3: Cross multiply
    15,883.95x = 21,920.24 × 8,810.67
  4. Step 4: Simplify right side
    15,883.95x = 193,131,956.91
  5. Step 5: Solve for x
    x = 193,131,956.91/15,883.95
  6. Step 6: Final answer
    x = 12,158.94

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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.