Home / 18,711.02-28,088.40-12,164.60

Finding the Fourth Proportional to 18,711.02, 28,088.40 and 12,164.60

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Solution

The fourth proportional to 18,711.02, 28,088.40 and 12,164.60 is: 18,261.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.02 : 28,088.40 = 12,164.60 : x
  2. Step 2: Convert to fraction form
    18,711.02/28,088.40 = 12,164.60/x
  3. Step 3: Cross multiply
    18,711.02x = 28,088.40 × 12,164.60
  4. Step 4: Simplify right side
    18,711.02x = 341,684,150.64
  5. Step 5: Solve for x
    x = 341,684,150.64/18,711.02
  6. Step 6: Final answer
    x = 18,261.12

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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.