Home / 42,683.20-64,034.40-13,102.40

Finding the Fourth Proportional to 42,683.20, 64,034.40 and 13,102.40

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Solution

The fourth proportional to 42,683.20, 64,034.40 and 13,102.40 is: 19,656.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,683.20 : 64,034.40 = 13,102.40 : x
  2. Step 2: Convert to fraction form
    42,683.20/64,034.40 = 13,102.40/x
  3. Step 3: Cross multiply
    42,683.20x = 64,034.40 × 13,102.40
  4. Step 4: Simplify right side
    42,683.20x = 839,004,322.56
  5. Step 5: Solve for x
    x = 839,004,322.56/42,683.20
  6. Step 6: Final answer
    x = 19,656.55

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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.