Home / 21,820.76-30,089.58-20,045.24

Finding the Fourth Proportional to 21,820.76, 30,089.58 and 20,045.24

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Solution

The fourth proportional to 21,820.76, 30,089.58 and 20,045.24 is: 27,641.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,820.76 : 30,089.58 = 20,045.24 : x
  2. Step 2: Convert to fraction form
    21,820.76/30,089.58 = 20,045.24/x
  3. Step 3: Cross multiply
    21,820.76x = 30,089.58 × 20,045.24
  4. Step 4: Simplify right side
    21,820.76x = 603,152,852.60
  5. Step 5: Solve for x
    x = 603,152,852.60/21,820.76
  6. Step 6: Final answer
    x = 27,641.24

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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.