Home / 42,727.60-64,096.20-13,145.20

Finding the Fourth Proportional to 42,727.60, 64,096.20 and 13,145.20

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Solution

The fourth proportional to 42,727.60, 64,096.20 and 13,145.20 is: 19,719.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,727.60 : 64,096.20 = 13,145.20 : x
  2. Step 2: Convert to fraction form
    42,727.60/64,096.20 = 13,145.20/x
  3. Step 3: Cross multiply
    42,727.60x = 64,096.20 × 13,145.20
  4. Step 4: Simplify right side
    42,727.60x = 842,557,368.24
  5. Step 5: Solve for x
    x = 842,557,368.24/42,727.60
  6. Step 6: Final answer
    x = 19,719.28

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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.