Home / 27,920.70-38,530.08-15,345.45

Finding the Fourth Proportional to 27,920.70, 38,530.08 and 15,345.45

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Solution

The fourth proportional to 27,920.70, 38,530.08 and 15,345.45 is: 21,176.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,920.70 : 38,530.08 = 15,345.45 : x
  2. Step 2: Convert to fraction form
    27,920.70/38,530.08 = 15,345.45/x
  3. Step 3: Cross multiply
    27,920.70x = 38,530.08 × 15,345.45
  4. Step 4: Simplify right side
    27,920.70x = 591,261,416.14
  5. Step 5: Solve for x
    x = 591,261,416.14/27,920.70
  6. Step 6: Final answer
    x = 21,176.45

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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.