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Finding the Fourth Proportional to 13,168.63, 19,739.07 and 9,007.50

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Solution

The fourth proportional to 13,168.63, 19,739.07 and 9,007.50 is: 13,501.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.63 : 19,739.07 = 9,007.50 : x
  2. Step 2: Convert to fraction form
    13,168.63/19,739.07 = 9,007.50/x
  3. Step 3: Cross multiply
    13,168.63x = 19,739.07 × 9,007.50
  4. Step 4: Simplify right side
    13,168.63x = 177,799,721.71
  5. Step 5: Solve for x
    x = 177,799,721.71/13,168.63
  6. Step 6: Final answer
    x = 13,501.77

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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.