Home / 42,643.20-63,964.20-19,269.60

Finding the Fourth Proportional to 42,643.20, 63,964.20 and 19,269.60

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Solution

The fourth proportional to 42,643.20, 63,964.20 and 19,269.60 is: 28,904.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,643.20 : 63,964.20 = 19,269.60 : x
  2. Step 2: Convert to fraction form
    42,643.20/63,964.20 = 19,269.60/x
  3. Step 3: Cross multiply
    42,643.20x = 63,964.20 × 19,269.60
  4. Step 4: Simplify right side
    42,643.20x = 1,232,564,548.32
  5. Step 5: Solve for x
    x = 1,232,564,548.32/42,643.20
  6. Step 6: Final answer
    x = 28,904.13

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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.