Home / 15,405.40-23,118.90-6,646.60

Finding the Fourth Proportional to 15,405.40, 23,118.90 and 6,646.60

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Solution

The fourth proportional to 15,405.40, 23,118.90 and 6,646.60 is: 9,974.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.40 : 23,118.90 = 6,646.60 : x
  2. Step 2: Convert to fraction form
    15,405.40/23,118.90 = 6,646.60/x
  3. Step 3: Cross multiply
    15,405.40x = 23,118.90 × 6,646.60
  4. Step 4: Simplify right side
    15,405.40x = 153,662,080.74
  5. Step 5: Solve for x
    x = 153,662,080.74/15,405.40
  6. Step 6: Final answer
    x = 9,974.56

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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.