Home / 15,187.04-20,957.64-8,903.60

Finding the Fourth Proportional to 15,187.04, 20,957.64 and 8,903.60

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Solution

The fourth proportional to 15,187.04, 20,957.64 and 8,903.60 is: 12,286.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.04 : 20,957.64 = 8,903.60 : x
  2. Step 2: Convert to fraction form
    15,187.04/20,957.64 = 8,903.60/x
  3. Step 3: Cross multiply
    15,187.04x = 20,957.64 × 8,903.60
  4. Step 4: Simplify right side
    15,187.04x = 186,598,443.50
  5. Step 5: Solve for x
    x = 186,598,443.50/15,187.04
  6. Step 6: Final answer
    x = 12,286.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.