Home / 27,431.89-37,855.55-15,332.65

Finding the Fourth Proportional to 27,431.89, 37,855.55 and 15,332.65

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Solution

The fourth proportional to 27,431.89, 37,855.55 and 15,332.65 is: 21,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,431.89 : 37,855.55 = 15,332.65 : x
  2. Step 2: Convert to fraction form
    27,431.89/37,855.55 = 15,332.65/x
  3. Step 3: Cross multiply
    27,431.89x = 37,855.55 × 15,332.65
  4. Step 4: Simplify right side
    27,431.89x = 580,425,898.71
  5. Step 5: Solve for x
    x = 580,425,898.71/27,431.89
  6. Step 6: Final answer
    x = 21,158.80

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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.