Home / 53,312.86-79,969.40-13,869.91

Finding the Fourth Proportional to 53,312.86, 79,969.40 and 13,869.91

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Solution

The fourth proportional to 53,312.86, 79,969.40 and 13,869.91 is: 20,804.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,312.86 : 79,969.40 = 13,869.91 : x
  2. Step 2: Convert to fraction form
    53,312.86/79,969.40 = 13,869.91/x
  3. Step 3: Cross multiply
    53,312.86x = 79,969.40 × 13,869.91
  4. Step 4: Simplify right side
    53,312.86x = 1,109,168,380.75
  5. Step 5: Solve for x
    x = 1,109,168,380.75/53,312.86
  6. Step 6: Final answer
    x = 20,804.89

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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.