Home / 38,645.32-53,331.86-21,650.28

Finding the Fourth Proportional to 38,645.32, 53,331.86 and 21,650.28

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Solution

The fourth proportional to 38,645.32, 53,331.86 and 21,650.28 is: 29,878.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,645.32 : 53,331.86 = 21,650.28 : x
  2. Step 2: Convert to fraction form
    38,645.32/53,331.86 = 21,650.28/x
  3. Step 3: Cross multiply
    38,645.32x = 53,331.86 × 21,650.28
  4. Step 4: Simplify right side
    38,645.32x = 1,154,649,701.92
  5. Step 5: Solve for x
    x = 1,154,649,701.92/38,645.32
  6. Step 6: Final answer
    x = 29,878.13

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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.