Home / 12,938.16-17,853.48-7,271.60

Finding the Fourth Proportional to 12,938.16, 17,853.48 and 7,271.60

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Solution

The fourth proportional to 12,938.16, 17,853.48 and 7,271.60 is: 10,034.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.16 : 17,853.48 = 7,271.60 : x
  2. Step 2: Convert to fraction form
    12,938.16/17,853.48 = 7,271.60/x
  3. Step 3: Cross multiply
    12,938.16x = 17,853.48 × 7,271.60
  4. Step 4: Simplify right side
    12,938.16x = 129,823,365.17
  5. Step 5: Solve for x
    x = 129,823,365.17/12,938.16
  6. Step 6: Final answer
    x = 10,034.14

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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.