Home / 42,818.20-64,221.63-19,439.26

Finding the Fourth Proportional to 42,818.20, 64,221.63 and 19,439.26

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Solution

The fourth proportional to 42,818.20, 64,221.63 and 19,439.26 is: 29,156.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,818.20 : 64,221.63 = 19,439.26 : x
  2. Step 2: Convert to fraction form
    42,818.20/64,221.63 = 19,439.26/x
  3. Step 3: Cross multiply
    42,818.20x = 64,221.63 × 19,439.26
  4. Step 4: Simplify right side
    42,818.20x = 1,248,420,963.19
  5. Step 5: Solve for x
    x = 1,248,420,963.19/42,818.20
  6. Step 6: Final answer
    x = 29,156.32

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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.