Home / 27,658.65-38,172.20-15,723.77

Finding the Fourth Proportional to 27,658.65, 38,172.20 and 15,723.77

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Solution

The fourth proportional to 27,658.65, 38,172.20 and 15,723.77 is: 21,700.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,658.65 : 38,172.20 = 15,723.77 : x
  2. Step 2: Convert to fraction form
    27,658.65/38,172.20 = 15,723.77/x
  3. Step 3: Cross multiply
    27,658.65x = 38,172.20 × 15,723.77
  4. Step 4: Simplify right side
    27,658.65x = 600,210,623.71
  5. Step 5: Solve for x
    x = 600,210,623.71/27,658.65
  6. Step 6: Final answer
    x = 21,700.65

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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.