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Finding the Fourth Proportional to 19,159.92, 28,722.83 and 7,470.45

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Solution

The fourth proportional to 19,159.92, 28,722.83 and 7,470.45 is: 11,199.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,159.92 : 28,722.83 = 7,470.45 : x
  2. Step 2: Convert to fraction form
    19,159.92/28,722.83 = 7,470.45/x
  3. Step 3: Cross multiply
    19,159.92x = 28,722.83 × 7,470.45
  4. Step 4: Simplify right side
    19,159.92x = 214,572,428.02
  5. Step 5: Solve for x
    x = 214,572,428.02/19,159.92
  6. Step 6: Final answer
    x = 11,199.03

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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.