Home / 13,332.65-19,985.09-5,431.77

Finding the Fourth Proportional to 13,332.65, 19,985.09 and 5,431.77

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Solution

The fourth proportional to 13,332.65, 19,985.09 and 5,431.77 is: 8,142.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,332.65 : 19,985.09 = 5,431.77 : x
  2. Step 2: Convert to fraction form
    13,332.65/19,985.09 = 5,431.77/x
  3. Step 3: Cross multiply
    13,332.65x = 19,985.09 × 5,431.77
  4. Step 4: Simplify right side
    13,332.65x = 108,554,385.15
  5. Step 5: Solve for x
    x = 108,554,385.15/13,332.65
  6. Step 6: Final answer
    x = 8,142.00

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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.