Home / 42,490.50-63,735.90-19,089.60

Finding the Fourth Proportional to 42,490.50, 63,735.90 and 19,089.60

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Solution

The fourth proportional to 42,490.50, 63,735.90 and 19,089.60 is: 28,634.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,490.50 : 63,735.90 = 19,089.60 : x
  2. Step 2: Convert to fraction form
    42,490.50/63,735.90 = 19,089.60/x
  3. Step 3: Cross multiply
    42,490.50x = 63,735.90 × 19,089.60
  4. Step 4: Simplify right side
    42,490.50x = 1,216,692,836.64
  5. Step 5: Solve for x
    x = 1,216,692,836.64/42,490.50
  6. Step 6: Final answer
    x = 28,634.47

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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.