Home / 18,306.72-27,457.80-6,458.40

Finding the Fourth Proportional to 18,306.72, 27,457.80 and 6,458.40

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Solution

The fourth proportional to 18,306.72, 27,457.80 and 6,458.40 is: 9,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306.72 : 27,457.80 = 6,458.40 : x
  2. Step 2: Convert to fraction form
    18,306.72/27,457.80 = 6,458.40/x
  3. Step 3: Cross multiply
    18,306.72x = 27,457.80 × 6,458.40
  4. Step 4: Simplify right side
    18,306.72x = 177,333,455.52
  5. Step 5: Solve for x
    x = 177,333,455.52/18,306.72
  6. Step 6: Final answer
    x = 9,686.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.