Home / 42,792.40-64,191.67-13,206.39

Finding the Fourth Proportional to 42,792.40, 64,191.67 and 13,206.39

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Solution

The fourth proportional to 42,792.40, 64,191.67 and 13,206.39 is: 19,810.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,792.40 : 64,191.67 = 13,206.39 : x
  2. Step 2: Convert to fraction form
    42,792.40/64,191.67 = 13,206.39/x
  3. Step 3: Cross multiply
    42,792.40x = 64,191.67 × 13,206.39
  4. Step 4: Simplify right side
    42,792.40x = 847,740,390.40
  5. Step 5: Solve for x
    x = 847,740,390.40/42,792.40
  6. Step 6: Final answer
    x = 19,810.54

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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.