Home / 27,477.90-37,878.17-21,499.19

Finding the Fourth Proportional to 27,477.90, 37,878.17 and 21,499.19

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Solution

The fourth proportional to 27,477.90, 37,878.17 and 21,499.19 is: 29,636.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,477.90 : 37,878.17 = 21,499.19 : x
  2. Step 2: Convert to fraction form
    27,477.90/37,878.17 = 21,499.19/x
  3. Step 3: Cross multiply
    27,477.90x = 37,878.17 × 21,499.19
  4. Step 4: Simplify right side
    27,477.90x = 814,349,676.80
  5. Step 5: Solve for x
    x = 814,349,676.80/27,477.90
  6. Step 6: Final answer
    x = 29,636.53

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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.