Home / 21,050.08-31,392.16-20,767.59

Finding the Fourth Proportional to 21,050.08, 31,392.16 and 20,767.59

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Solution

The fourth proportional to 21,050.08, 31,392.16 and 20,767.59 is: 30,970.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050.08 : 31,392.16 = 20,767.59 : x
  2. Step 2: Convert to fraction form
    21,050.08/31,392.16 = 20,767.59/x
  3. Step 3: Cross multiply
    21,050.08x = 31,392.16 × 20,767.59
  4. Step 4: Simplify right side
    21,050.08x = 651,939,456.18
  5. Step 5: Solve for x
    x = 651,939,456.18/21,050.08
  6. Step 6: Final answer
    x = 30,970.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.