Home / 21,320.04-29,423.70-11,889.48

Finding the Fourth Proportional to 21,320.04, 29,423.70 and 11,889.48

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Solution

The fourth proportional to 21,320.04, 29,423.70 and 11,889.48 is: 16,408.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.04 : 29,423.70 = 11,889.48 : x
  2. Step 2: Convert to fraction form
    21,320.04/29,423.70 = 11,889.48/x
  3. Step 3: Cross multiply
    21,320.04x = 29,423.70 × 11,889.48
  4. Step 4: Simplify right side
    21,320.04x = 349,832,492.68
  5. Step 5: Solve for x
    x = 349,832,492.68/21,320.04
  6. Step 6: Final answer
    x = 16,408.62

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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.