Home / 10,307.60-15,439.80-6,808.40

Finding the Fourth Proportional to 10,307.60, 15,439.80 and 6,808.40

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Solution

The fourth proportional to 10,307.60, 15,439.80 and 6,808.40 is: 10,198.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,307.60 : 15,439.80 = 6,808.40 : x
  2. Step 2: Convert to fraction form
    10,307.60/15,439.80 = 6,808.40/x
  3. Step 3: Cross multiply
    10,307.60x = 15,439.80 × 6,808.40
  4. Step 4: Simplify right side
    10,307.60x = 105,120,334.32
  5. Step 5: Solve for x
    x = 105,120,334.32/10,307.60
  6. Step 6: Final answer
    x = 10,198.33

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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.