Home / 15,299.52-21,114.78-8,925.63

Finding the Fourth Proportional to 15,299.52, 21,114.78 and 8,925.63

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Solution

The fourth proportional to 15,299.52, 21,114.78 and 8,925.63 is: 12,318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.52 : 21,114.78 = 8,925.63 : x
  2. Step 2: Convert to fraction form
    15,299.52/21,114.78 = 8,925.63/x
  3. Step 3: Cross multiply
    15,299.52x = 21,114.78 × 8,925.63
  4. Step 4: Simplify right side
    15,299.52x = 188,462,713.81
  5. Step 5: Solve for x
    x = 188,462,713.81/15,299.52
  6. Step 6: Final answer
    x = 12,318.21

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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.