Home / 10,438.10-15,639.54-5,166.08

Finding the Fourth Proportional to 10,438.10, 15,639.54 and 5,166.08

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Solution

The fourth proportional to 10,438.10, 15,639.54 and 5,166.08 is: 7,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,438.10 : 15,639.54 = 5,166.08 : x
  2. Step 2: Convert to fraction form
    10,438.10/15,639.54 = 5,166.08/x
  3. Step 3: Cross multiply
    10,438.10x = 15,639.54 × 5,166.08
  4. Step 4: Simplify right side
    10,438.10x = 80,795,114.80
  5. Step 5: Solve for x
    x = 80,795,114.80/10,438.10
  6. Step 6: Final answer
    x = 7,740.40

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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.