Home / 42,301.05-63,448.40-12,315.51

Finding the Fourth Proportional to 42,301.05, 63,448.40 and 12,315.51

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Solution

The fourth proportional to 42,301.05, 63,448.40 and 12,315.51 is: 18,472.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,301.05 : 63,448.40 = 12,315.51 : x
  2. Step 2: Convert to fraction form
    42,301.05/63,448.40 = 12,315.51/x
  3. Step 3: Cross multiply
    42,301.05x = 63,448.40 × 12,315.51
  4. Step 4: Simplify right side
    42,301.05x = 781,399,627.22
  5. Step 5: Solve for x
    x = 781,399,627.22/42,301.05
  6. Step 6: Final answer
    x = 18,472.35

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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.