Home / 10,318.10-15,509.55-10,123.70

Finding the Fourth Proportional to 10,318.10, 15,509.55 and 10,123.70

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Solution

The fourth proportional to 10,318.10, 15,509.55 and 10,123.70 is: 15,217.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,318.10 : 15,509.55 = 10,123.70 : x
  2. Step 2: Convert to fraction form
    10,318.10/15,509.55 = 10,123.70/x
  3. Step 3: Cross multiply
    10,318.10x = 15,509.55 × 10,123.70
  4. Step 4: Simplify right side
    10,318.10x = 157,014,031.34
  5. Step 5: Solve for x
    x = 157,014,031.34/10,318.10
  6. Step 6: Final answer
    x = 15,217.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.