Home / 42,284.79-63,397.17-21,209.67

Finding the Fourth Proportional to 42,284.79, 63,397.17 and 21,209.67

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Solution

The fourth proportional to 42,284.79, 63,397.17 and 21,209.67 is: 31,799.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,284.79 : 63,397.17 = 21,209.67 : x
  2. Step 2: Convert to fraction form
    42,284.79/63,397.17 = 21,209.67/x
  3. Step 3: Cross multiply
    42,284.79x = 63,397.17 × 21,209.67
  4. Step 4: Simplify right side
    42,284.79x = 1,344,633,054.63
  5. Step 5: Solve for x
    x = 1,344,633,054.63/42,284.79
  6. Step 6: Final answer
    x = 31,799.45

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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.