Home / 42,420.21-63,614.10-13,950.51

Finding the Fourth Proportional to 42,420.21, 63,614.10 and 13,950.51

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Solution

The fourth proportional to 42,420.21, 63,614.10 and 13,950.51 is: 20,920.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,420.21 : 63,614.10 = 13,950.51 : x
  2. Step 2: Convert to fraction form
    42,420.21/63,614.10 = 13,950.51/x
  3. Step 3: Cross multiply
    42,420.21x = 63,614.10 × 13,950.51
  4. Step 4: Simplify right side
    42,420.21x = 887,449,138.19
  5. Step 5: Solve for x
    x = 887,449,138.19/42,420.21
  6. Step 6: Final answer
    x = 20,920.43

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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.