Home / 12,019.10-16,581.20-7,539.80

Finding the Fourth Proportional to 12,019.10, 16,581.20 and 7,539.80

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Solution

The fourth proportional to 12,019.10, 16,581.20 and 7,539.80 is: 10,401.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,019.10 : 16,581.20 = 7,539.80 : x
  2. Step 2: Convert to fraction form
    12,019.10/16,581.20 = 7,539.80/x
  3. Step 3: Cross multiply
    12,019.10x = 16,581.20 × 7,539.80
  4. Step 4: Simplify right side
    12,019.10x = 125,018,931.76
  5. Step 5: Solve for x
    x = 125,018,931.76/12,019.10
  6. Step 6: Final answer
    x = 10,401.69

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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.