Home / 13,560.70-18,711.53-8,521.35

Finding the Fourth Proportional to 13,560.70, 18,711.53 and 8,521.35

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Solution

The fourth proportional to 13,560.70, 18,711.53 and 8,521.35 is: 11,758.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.70 : 18,711.53 = 8,521.35 : x
  2. Step 2: Convert to fraction form
    13,560.70/18,711.53 = 8,521.35/x
  3. Step 3: Cross multiply
    13,560.70x = 18,711.53 × 8,521.35
  4. Step 4: Simplify right side
    13,560.70x = 159,447,415.35
  5. Step 5: Solve for x
    x = 159,447,415.35/13,560.70
  6. Step 6: Final answer
    x = 11,758.05

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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.