Home / 13,606.31-18,775.19-7,637.15

Finding the Fourth Proportional to 13,606.31, 18,775.19 and 7,637.15

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Solution

The fourth proportional to 13,606.31, 18,775.19 and 7,637.15 is: 10,538.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.31 : 18,775.19 = 7,637.15 : x
  2. Step 2: Convert to fraction form
    13,606.31/18,775.19 = 7,637.15/x
  3. Step 3: Cross multiply
    13,606.31x = 18,775.19 × 7,637.15
  4. Step 4: Simplify right side
    13,606.31x = 143,389,008.34
  5. Step 5: Solve for x
    x = 143,389,008.34/13,606.31
  6. Step 6: Final answer
    x = 10,538.42

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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.