Home / 20,928.33-31,365.78-9,810.51

Finding the Fourth Proportional to 20,928.33, 31,365.78 and 9,810.51

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Solution

The fourth proportional to 20,928.33, 31,365.78 and 9,810.51 is: 14,703.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.33 : 31,365.78 = 9,810.51 : x
  2. Step 2: Convert to fraction form
    20,928.33/31,365.78 = 9,810.51/x
  3. Step 3: Cross multiply
    20,928.33x = 31,365.78 × 9,810.51
  4. Step 4: Simplify right side
    20,928.33x = 307,714,298.35
  5. Step 5: Solve for x
    x = 307,714,298.35/20,928.33
  6. Step 6: Final answer
    x = 14,703.24

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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.