Home / 15,007.14-20,709.87-8,719.50

Finding the Fourth Proportional to 15,007.14, 20,709.87 and 8,719.50

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Solution

The fourth proportional to 15,007.14, 20,709.87 and 8,719.50 is: 12,032.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.14 : 20,709.87 = 8,719.50 : x
  2. Step 2: Convert to fraction form
    15,007.14/20,709.87 = 8,719.50/x
  3. Step 3: Cross multiply
    15,007.14x = 20,709.87 × 8,719.50
  4. Step 4: Simplify right side
    15,007.14x = 180,579,711.47
  5. Step 5: Solve for x
    x = 180,579,711.47/15,007.14
  6. Step 6: Final answer
    x = 12,032.92

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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.