Home / 39,712.86-59,570.72-19,980.68

Finding the Fourth Proportional to 39,712.86, 59,570.72 and 19,980.68

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Solution

The fourth proportional to 39,712.86, 59,570.72 and 19,980.68 is: 29,971.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,712.86 : 59,570.72 = 19,980.68 : x
  2. Step 2: Convert to fraction form
    39,712.86/59,570.72 = 19,980.68/x
  3. Step 3: Cross multiply
    39,712.86x = 59,570.72 × 19,980.68
  4. Step 4: Simplify right side
    39,712.86x = 1,190,263,493.69
  5. Step 5: Solve for x
    x = 1,190,263,493.69/39,712.86
  6. Step 6: Final answer
    x = 29,971.74

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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.