Home / 15,518.72-21,401.68-11,549.76

Finding the Fourth Proportional to 15,518.72, 21,401.68 and 11,549.76

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Solution

The fourth proportional to 15,518.72, 21,401.68 and 11,549.76 is: 15,928.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.72 : 21,401.68 = 11,549.76 : x
  2. Step 2: Convert to fraction form
    15,518.72/21,401.68 = 11,549.76/x
  3. Step 3: Cross multiply
    15,518.72x = 21,401.68 × 11,549.76
  4. Step 4: Simplify right side
    15,518.72x = 247,184,267.60
  5. Step 5: Solve for x
    x = 247,184,267.60/15,518.72
  6. Step 6: Final answer
    x = 15,928.14

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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.