Home / 28,877.91-39,837.83-18,802.68

Finding the Fourth Proportional to 28,877.91, 39,837.83 and 18,802.68

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Solution

The fourth proportional to 28,877.91, 39,837.83 and 18,802.68 is: 25,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,877.91 : 39,837.83 = 18,802.68 : x
  2. Step 2: Convert to fraction form
    28,877.91/39,837.83 = 18,802.68/x
  3. Step 3: Cross multiply
    28,877.91x = 39,837.83 × 18,802.68
  4. Step 4: Simplify right side
    28,877.91x = 749,057,875.37
  5. Step 5: Solve for x
    x = 749,057,875.37/28,877.91
  6. Step 6: Final answer
    x = 25,938.78

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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.