Home / 13,045.51-18,003.11-7,740.36

Finding the Fourth Proportional to 13,045.51, 18,003.11 and 7,740.36

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Solution

The fourth proportional to 13,045.51, 18,003.11 and 7,740.36 is: 10,681.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,045.51 : 18,003.11 = 7,740.36 : x
  2. Step 2: Convert to fraction form
    13,045.51/18,003.11 = 7,740.36/x
  3. Step 3: Cross multiply
    13,045.51x = 18,003.11 × 7,740.36
  4. Step 4: Simplify right side
    13,045.51x = 139,350,557.36
  5. Step 5: Solve for x
    x = 139,350,557.36/13,045.51
  6. Step 6: Final answer
    x = 10,681.88

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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.