Home / 19,423.40-29,135.10-18,111.20

Finding the Fourth Proportional to 19,423.40, 29,135.10 and 18,111.20

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Solution

The fourth proportional to 19,423.40, 29,135.10 and 18,111.20 is: 27,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,423.40 : 29,135.10 = 18,111.20 : x
  2. Step 2: Convert to fraction form
    19,423.40/29,135.10 = 18,111.20/x
  3. Step 3: Cross multiply
    19,423.40x = 29,135.10 × 18,111.20
  4. Step 4: Simplify right side
    19,423.40x = 527,671,623.12
  5. Step 5: Solve for x
    x = 527,671,623.12/19,423.40
  6. Step 6: Final answer
    x = 27,166.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.