Home / 27,894.87-38,499.48-21,530.70

Finding the Fourth Proportional to 27,894.87, 38,499.48 and 21,530.70

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Solution

The fourth proportional to 27,894.87, 38,499.48 and 21,530.70 is: 29,715.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,894.87 : 38,499.48 = 21,530.70 : x
  2. Step 2: Convert to fraction form
    27,894.87/38,499.48 = 21,530.70/x
  3. Step 3: Cross multiply
    27,894.87x = 38,499.48 × 21,530.70
  4. Step 4: Simplify right side
    27,894.87x = 828,920,754.04
  5. Step 5: Solve for x
    x = 828,920,754.04/27,894.87
  6. Step 6: Final answer
    x = 29,715.89

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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.