Home / 13,133.49-18,124.31-7,165.23

Finding the Fourth Proportional to 13,133.49, 18,124.31 and 7,165.23

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Solution

The fourth proportional to 13,133.49, 18,124.31 and 7,165.23 is: 9,888.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.49 : 18,124.31 = 7,165.23 : x
  2. Step 2: Convert to fraction form
    13,133.49/18,124.31 = 7,165.23/x
  3. Step 3: Cross multiply
    13,133.49x = 18,124.31 × 7,165.23
  4. Step 4: Simplify right side
    13,133.49x = 129,864,813.92
  5. Step 5: Solve for x
    x = 129,864,813.92/13,133.49
  6. Step 6: Final answer
    x = 9,888.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.