Home / 13,938.72-19,236.72-7,652.40

Finding the Fourth Proportional to 13,938.72, 19,236.72 and 7,652.40

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Solution

The fourth proportional to 13,938.72, 19,236.72 and 7,652.40 is: 10,561.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.72 : 19,236.72 = 7,652.40 : x
  2. Step 2: Convert to fraction form
    13,938.72/19,236.72 = 7,652.40/x
  3. Step 3: Cross multiply
    13,938.72x = 19,236.72 × 7,652.40
  4. Step 4: Simplify right side
    13,938.72x = 147,207,076.13
  5. Step 5: Solve for x
    x = 147,207,076.13/13,938.72
  6. Step 6: Final answer
    x = 10,561.02

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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.