Home / 10,970.80-16,445.40-5,419.60

Finding the Fourth Proportional to 10,970.80, 16,445.40 and 5,419.60

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Solution

The fourth proportional to 10,970.80, 16,445.40 and 5,419.60 is: 8,124.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,970.80 : 16,445.40 = 5,419.60 : x
  2. Step 2: Convert to fraction form
    10,970.80/16,445.40 = 5,419.60/x
  3. Step 3: Cross multiply
    10,970.80x = 16,445.40 × 5,419.60
  4. Step 4: Simplify right side
    10,970.80x = 89,127,489.84
  5. Step 5: Solve for x
    x = 89,127,489.84/10,970.80
  6. Step 6: Final answer
    x = 8,124.06

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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.