Home / 27,776.61-38,333.78-15,840.24

Finding the Fourth Proportional to 27,776.61, 38,333.78 and 15,840.24

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Solution

The fourth proportional to 27,776.61, 38,333.78 and 15,840.24 is: 21,860.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,776.61 : 38,333.78 = 15,840.24 : x
  2. Step 2: Convert to fraction form
    27,776.61/38,333.78 = 15,840.24/x
  3. Step 3: Cross multiply
    27,776.61x = 38,333.78 × 15,840.24
  4. Step 4: Simplify right side
    27,776.61x = 607,216,196.11
  5. Step 5: Solve for x
    x = 607,216,196.11/27,776.61
  6. Step 6: Final answer
    x = 21,860.70

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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.