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Finding the Fourth Proportional to 19,470.88, 29,206.56 and 5,620

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Solution

The fourth proportional to 19,470.88, 29,206.56 and 5,620 is: 8,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,470.88 : 29,206.56 = 5,620 : x
  2. Step 2: Convert to fraction form
    19,470.88/29,206.56 = 5,620/x
  3. Step 3: Cross multiply
    19,470.88x = 29,206.56 × 5,620
  4. Step 4: Simplify right side
    19,470.88x = 164,140,867.20
  5. Step 5: Solve for x
    x = 164,140,867.20/19,470.88
  6. Step 6: Final answer
    x = 8,430.07

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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.