Home / 15,513.03-21,407.43-9,138.15

Finding the Fourth Proportional to 15,513.03, 21,407.43 and 9,138.15

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Solution

The fourth proportional to 15,513.03, 21,407.43 and 9,138.15 is: 12,610.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,513.03 : 21,407.43 = 9,138.15 : x
  2. Step 2: Convert to fraction form
    15,513.03/21,407.43 = 9,138.15/x
  3. Step 3: Cross multiply
    15,513.03x = 21,407.43 × 9,138.15
  4. Step 4: Simplify right side
    15,513.03x = 195,624,306.45
  5. Step 5: Solve for x
    x = 195,624,306.45/15,513.03
  6. Step 6: Final answer
    x = 12,610.32

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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.