Home / 21,151.95-29,192.76-12,197.67

Finding the Fourth Proportional to 21,151.95, 29,192.76 and 12,197.67

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Solution

The fourth proportional to 21,151.95, 29,192.76 and 12,197.67 is: 16,834.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.95 : 29,192.76 = 12,197.67 : x
  2. Step 2: Convert to fraction form
    21,151.95/29,192.76 = 12,197.67/x
  3. Step 3: Cross multiply
    21,151.95x = 29,192.76 × 12,197.67
  4. Step 4: Simplify right side
    21,151.95x = 356,083,652.87
  5. Step 5: Solve for x
    x = 356,083,652.87/21,151.95
  6. Step 6: Final answer
    x = 16,834.55

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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.