Home / 18,638.40-25,719.48-10,681.32

Finding the Fourth Proportional to 18,638.40, 25,719.48 and 10,681.32

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Solution

The fourth proportional to 18,638.40, 25,719.48 and 10,681.32 is: 14,739.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.40 : 25,719.48 = 10,681.32 : x
  2. Step 2: Convert to fraction form
    18,638.40/25,719.48 = 10,681.32/x
  3. Step 3: Cross multiply
    18,638.40x = 25,719.48 × 10,681.32
  4. Step 4: Simplify right side
    18,638.40x = 274,717,996.11
  5. Step 5: Solve for x
    x = 274,717,996.11/18,638.40
  6. Step 6: Final answer
    x = 14,739.36

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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.