Home / 15,613.79-23,420.27-7,289.21

Finding the Fourth Proportional to 15,613.79, 23,420.27 and 7,289.21

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Solution

The fourth proportional to 15,613.79, 23,420.27 and 7,289.21 is: 10,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.79 : 23,420.27 = 7,289.21 : x
  2. Step 2: Convert to fraction form
    15,613.79/23,420.27 = 7,289.21/x
  3. Step 3: Cross multiply
    15,613.79x = 23,420.27 × 7,289.21
  4. Step 4: Simplify right side
    15,613.79x = 170,715,343.06
  5. Step 5: Solve for x
    x = 170,715,343.06/15,613.79
  6. Step 6: Final answer
    x = 10,933.63

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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.