Home / 28,954.13-39,929.36-18,890.28

Finding the Fourth Proportional to 28,954.13, 39,929.36 and 18,890.28

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Solution

The fourth proportional to 28,954.13, 39,929.36 and 18,890.28 is: 26,050.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,954.13 : 39,929.36 = 18,890.28 : x
  2. Step 2: Convert to fraction form
    28,954.13/39,929.36 = 18,890.28/x
  3. Step 3: Cross multiply
    28,954.13x = 39,929.36 × 18,890.28
  4. Step 4: Simplify right side
    28,954.13x = 754,276,696.17
  5. Step 5: Solve for x
    x = 754,276,696.17/28,954.13
  6. Step 6: Final answer
    x = 26,050.75

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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.