Home / 15,007.46-20,709.69-8,719.34

Finding the Fourth Proportional to 15,007.46, 20,709.69 and 8,719.34

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Solution

The fourth proportional to 15,007.46, 20,709.69 and 8,719.34 is: 12,032.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.46 : 20,709.69 = 8,719.34 : x
  2. Step 2: Convert to fraction form
    15,007.46/20,709.69 = 8,719.34/x
  3. Step 3: Cross multiply
    15,007.46x = 20,709.69 × 8,719.34
  4. Step 4: Simplify right side
    15,007.46x = 180,574,828.40
  5. Step 5: Solve for x
    x = 180,574,828.40/15,007.46
  6. Step 6: Final answer
    x = 12,032.34

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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.