Home / 27,945.80-41,918.70-10,428.20

Finding the Fourth Proportional to 27,945.80, 41,918.70 and 10,428.20

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Solution

The fourth proportional to 27,945.80, 41,918.70 and 10,428.20 is: 15,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,945.80 : 41,918.70 = 10,428.20 : x
  2. Step 2: Convert to fraction form
    27,945.80/41,918.70 = 10,428.20/x
  3. Step 3: Cross multiply
    27,945.80x = 41,918.70 × 10,428.20
  4. Step 4: Simplify right side
    27,945.80x = 437,136,587.34
  5. Step 5: Solve for x
    x = 437,136,587.34/27,945.80
  6. Step 6: Final answer
    x = 15,642.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.