Home / 18,658.04-25,695.90-15,485

Finding the Fourth Proportional to 18,658.04, 25,695.90 and 15,485

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Solution

The fourth proportional to 18,658.04, 25,695.90 and 15,485 is: 21,325.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.04 : 25,695.90 = 15,485 : x
  2. Step 2: Convert to fraction form
    18,658.04/25,695.90 = 15,485/x
  3. Step 3: Cross multiply
    18,658.04x = 25,695.90 × 15,485
  4. Step 4: Simplify right side
    18,658.04x = 397,901,011.50
  5. Step 5: Solve for x
    x = 397,901,011.50/18,658.04
  6. Step 6: Final answer
    x = 21,325.98

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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.