Home / 13,521.85-18,658.41-7,553.77

Finding the Fourth Proportional to 13,521.85, 18,658.41 and 7,553.77

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Solution

The fourth proportional to 13,521.85, 18,658.41 and 7,553.77 is: 10,423.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.85 : 18,658.41 = 7,553.77 : x
  2. Step 2: Convert to fraction form
    13,521.85/18,658.41 = 7,553.77/x
  3. Step 3: Cross multiply
    13,521.85x = 18,658.41 × 7,553.77
  4. Step 4: Simplify right side
    13,521.85x = 140,941,337.71
  5. Step 5: Solve for x
    x = 140,941,337.71/13,521.85
  6. Step 6: Final answer
    x = 10,423.23

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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.