Home / 13,309.79-19,966.77-4,988.66

Finding the Fourth Proportional to 13,309.79, 19,966.77 and 4,988.66

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Solution

The fourth proportional to 13,309.79, 19,966.77 and 4,988.66 is: 7,483.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.79 : 19,966.77 = 4,988.66 : x
  2. Step 2: Convert to fraction form
    13,309.79/19,966.77 = 4,988.66/x
  3. Step 3: Cross multiply
    13,309.79x = 19,966.77 × 4,988.66
  4. Step 4: Simplify right side
    13,309.79x = 99,607,326.99
  5. Step 5: Solve for x
    x = 99,607,326.99/13,309.79
  6. Step 6: Final answer
    x = 7,483.77

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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.