Home / 10,955.60-16,409.10-4,378.40

Finding the Fourth Proportional to 10,955.60, 16,409.10 and 4,378.40

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Solution

The fourth proportional to 10,955.60, 16,409.10 and 4,378.40 is: 6,557.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.60 : 16,409.10 = 4,378.40 : x
  2. Step 2: Convert to fraction form
    10,955.60/16,409.10 = 4,378.40/x
  3. Step 3: Cross multiply
    10,955.60x = 16,409.10 × 4,378.40
  4. Step 4: Simplify right side
    10,955.60x = 71,845,603.44
  5. Step 5: Solve for x
    x = 71,845,603.44/10,955.60
  6. Step 6: Final answer
    x = 6,557.89

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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.