Home / 53,305.69-79,948.86-13,860.36

Finding the Fourth Proportional to 53,305.69, 79,948.86 and 13,860.36

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Solution

The fourth proportional to 53,305.69, 79,948.86 and 13,860.36 is: 20,788.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,305.69 : 79,948.86 = 13,860.36 : x
  2. Step 2: Convert to fraction form
    53,305.69/79,948.86 = 13,860.36/x
  3. Step 3: Cross multiply
    53,305.69x = 79,948.86 × 13,860.36
  4. Step 4: Simplify right side
    53,305.69x = 1,108,119,981.19
  5. Step 5: Solve for x
    x = 1,108,119,981.19/53,305.69
  6. Step 6: Final answer
    x = 20,788.02

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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.