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Finding the Fourth Proportional to 28,402.76, 39,165.04 and 19,334

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Solution

The fourth proportional to 28,402.76, 39,165.04 and 19,334 is: 26,659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402.76 : 39,165.04 = 19,334 : x
  2. Step 2: Convert to fraction form
    28,402.76/39,165.04 = 19,334/x
  3. Step 3: Cross multiply
    28,402.76x = 39,165.04 × 19,334
  4. Step 4: Simplify right side
    28,402.76x = 757,216,883.36
  5. Step 5: Solve for x
    x = 757,216,883.36/28,402.76
  6. Step 6: Final answer
    x = 26,659.98

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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.