Home / 28,066.96-38,715.60-20,504.05

Finding the Fourth Proportional to 28,066.96, 38,715.60 and 20,504.05

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Solution

The fourth proportional to 28,066.96, 38,715.60 and 20,504.05 is: 28,283.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,066.96 : 38,715.60 = 20,504.05 : x
  2. Step 2: Convert to fraction form
    28,066.96/38,715.60 = 20,504.05/x
  3. Step 3: Cross multiply
    28,066.96x = 38,715.60 × 20,504.05
  4. Step 4: Simplify right side
    28,066.96x = 793,826,598.18
  5. Step 5: Solve for x
    x = 793,826,598.18/28,066.96
  6. Step 6: Final answer
    x = 28,283.31

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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.