Home / 21,130.50-29,153.03-12,177.84

Finding the Fourth Proportional to 21,130.50, 29,153.03 and 12,177.84

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Solution

The fourth proportional to 21,130.50, 29,153.03 and 12,177.84 is: 16,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.50 : 29,153.03 = 12,177.84 : x
  2. Step 2: Convert to fraction form
    21,130.50/29,153.03 = 12,177.84/x
  3. Step 3: Cross multiply
    21,130.50x = 29,153.03 × 12,177.84
  4. Step 4: Simplify right side
    21,130.50x = 355,020,873.97
  5. Step 5: Solve for x
    x = 355,020,873.97/21,130.50
  6. Step 6: Final answer
    x = 16,801.35

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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.