Home / 20,918.07-28,923.77-20,580.10

Finding the Fourth Proportional to 20,918.07, 28,923.77 and 20,580.10

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Solution

The fourth proportional to 20,918.07, 28,923.77 and 20,580.10 is: 28,456.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918.07 : 28,923.77 = 20,580.10 : x
  2. Step 2: Convert to fraction form
    20,918.07/28,923.77 = 20,580.10/x
  3. Step 3: Cross multiply
    20,918.07x = 28,923.77 × 20,580.10
  4. Step 4: Simplify right side
    20,918.07x = 595,254,058.12
  5. Step 5: Solve for x
    x = 595,254,058.12/20,918.07
  6. Step 6: Final answer
    x = 28,456.45

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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.