Home / 19,890.02-27,448.67-10,938.11

Finding the Fourth Proportional to 19,890.02, 27,448.67 and 10,938.11

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Solution

The fourth proportional to 19,890.02, 27,448.67 and 10,938.11 is: 15,094.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.02 : 27,448.67 = 10,938.11 : x
  2. Step 2: Convert to fraction form
    19,890.02/27,448.67 = 10,938.11/x
  3. Step 3: Cross multiply
    19,890.02x = 27,448.67 × 10,938.11
  4. Step 4: Simplify right side
    19,890.02x = 300,236,379.88
  5. Step 5: Solve for x
    x = 300,236,379.88/19,890.02
  6. Step 6: Final answer
    x = 15,094.83

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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.