Home / 15,388.04-21,237.10-9,423.68

Finding the Fourth Proportional to 15,388.04, 21,237.10 and 9,423.68

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Solution

The fourth proportional to 15,388.04, 21,237.10 and 9,423.68 is: 13,005.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.04 : 21,237.10 = 9,423.68 : x
  2. Step 2: Convert to fraction form
    15,388.04/21,237.10 = 9,423.68/x
  3. Step 3: Cross multiply
    15,388.04x = 21,237.10 × 9,423.68
  4. Step 4: Simplify right side
    15,388.04x = 200,131,504.78
  5. Step 5: Solve for x
    x = 200,131,504.78/15,388.04
  6. Step 6: Final answer
    x = 13,005.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.