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Finding the Fourth Proportional to 19,145, 26,421.72 and 10,763.12

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Solution

The fourth proportional to 19,145, 26,421.72 and 10,763.12 is: 14,854.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145 : 26,421.72 = 10,763.12 : x
  2. Step 2: Convert to fraction form
    19,145/26,421.72 = 10,763.12/x
  3. Step 3: Cross multiply
    19,145x = 26,421.72 × 10,763.12
  4. Step 4: Simplify right side
    19,145x = 284,380,142.97
  5. Step 5: Solve for x
    x = 284,380,142.97/19,145
  6. Step 6: Final answer
    x = 14,854.02

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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.