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Finding the Fourth Proportional to 17,859.72, 26,710.74 and 10,820.28

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Solution

The fourth proportional to 17,859.72, 26,710.74 and 10,820.28 is: 16,182.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,859.72 : 26,710.74 = 10,820.28 : x
  2. Step 2: Convert to fraction form
    17,859.72/26,710.74 = 10,820.28/x
  3. Step 3: Cross multiply
    17,859.72x = 26,710.74 × 10,820.28
  4. Step 4: Simplify right side
    17,859.72x = 289,017,685.81
  5. Step 5: Solve for x
    x = 289,017,685.81/17,859.72
  6. Step 6: Final answer
    x = 16,182.65

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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.