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Finding the Fourth Proportional to 15,751.47, 23,606.42 and 7,420.08

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Solution

The fourth proportional to 15,751.47, 23,606.42 and 7,420.08 is: 11,120.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,751.47 : 23,606.42 = 7,420.08 : x
  2. Step 2: Convert to fraction form
    15,751.47/23,606.42 = 7,420.08/x
  3. Step 3: Cross multiply
    15,751.47x = 23,606.42 × 7,420.08
  4. Step 4: Simplify right side
    15,751.47x = 175,161,487.81
  5. Step 5: Solve for x
    x = 175,161,487.81/15,751.47
  6. Step 6: Final answer
    x = 11,120.33

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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.