Home / 12,938.40-19,391.36-5,534.15

Finding the Fourth Proportional to 12,938.40, 19,391.36 and 5,534.15

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Solution

The fourth proportional to 12,938.40, 19,391.36 and 5,534.15 is: 8,294.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.40 : 19,391.36 = 5,534.15 : x
  2. Step 2: Convert to fraction form
    12,938.40/19,391.36 = 5,534.15/x
  3. Step 3: Cross multiply
    12,938.40x = 19,391.36 × 5,534.15
  4. Step 4: Simplify right side
    12,938.40x = 107,314,570.32
  5. Step 5: Solve for x
    x = 107,314,570.32/12,938.40
  6. Step 6: Final answer
    x = 8,294.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.