Home / 15,329.23-21,154.43-8,956.20

Finding the Fourth Proportional to 15,329.23, 21,154.43 and 8,956.20

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Solution

The fourth proportional to 15,329.23, 21,154.43 and 8,956.20 is: 12,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.23 : 21,154.43 = 8,956.20 : x
  2. Step 2: Convert to fraction form
    15,329.23/21,154.43 = 8,956.20/x
  3. Step 3: Cross multiply
    15,329.23x = 21,154.43 × 8,956.20
  4. Step 4: Simplify right side
    15,329.23x = 189,463,208.30
  5. Step 5: Solve for x
    x = 189,463,208.30/15,329.23
  6. Step 6: Final answer
    x = 12,359.60

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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.