Home / 13,053.40-18,009.40-7,387.58

Finding the Fourth Proportional to 13,053.40, 18,009.40 and 7,387.58

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Solution

The fourth proportional to 13,053.40, 18,009.40 and 7,387.58 is: 10,192.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.40 : 18,009.40 = 7,387.58 : x
  2. Step 2: Convert to fraction form
    13,053.40/18,009.40 = 7,387.58/x
  3. Step 3: Cross multiply
    13,053.40x = 18,009.40 × 7,387.58
  4. Step 4: Simplify right side
    13,053.40x = 133,045,883.25
  5. Step 5: Solve for x
    x = 133,045,883.25/13,053.40
  6. Step 6: Final answer
    x = 10,192.43

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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.