Home / 20,656.96-28,509.06-12,273.40

Finding the Fourth Proportional to 20,656.96, 28,509.06 and 12,273.40

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Solution

The fourth proportional to 20,656.96, 28,509.06 and 12,273.40 is: 16,938.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.96 : 28,509.06 = 12,273.40 : x
  2. Step 2: Convert to fraction form
    20,656.96/28,509.06 = 12,273.40/x
  3. Step 3: Cross multiply
    20,656.96x = 28,509.06 × 12,273.40
  4. Step 4: Simplify right side
    20,656.96x = 349,903,097.00
  5. Step 5: Solve for x
    x = 349,903,097.00/20,656.96
  6. Step 6: Final answer
    x = 16,938.75

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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.