Home / 21,101.56-29,127.48-12,152.63

Finding the Fourth Proportional to 21,101.56, 29,127.48 and 12,152.63

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Solution

The fourth proportional to 21,101.56, 29,127.48 and 12,152.63 is: 16,774.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.56 : 29,127.48 = 12,152.63 : x
  2. Step 2: Convert to fraction form
    21,101.56/29,127.48 = 12,152.63/x
  3. Step 3: Cross multiply
    21,101.56x = 29,127.48 × 12,152.63
  4. Step 4: Simplify right side
    21,101.56x = 353,975,487.27
  5. Step 5: Solve for x
    x = 353,975,487.27/21,101.56
  6. Step 6: Final answer
    x = 16,774.85

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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.