Home / 28,720.02-43,017.66-13,897.84

Finding the Fourth Proportional to 28,720.02, 43,017.66 and 13,897.84

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Solution

The fourth proportional to 28,720.02, 43,017.66 and 13,897.84 is: 20,816.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.02 : 43,017.66 = 13,897.84 : x
  2. Step 2: Convert to fraction form
    28,720.02/43,017.66 = 13,897.84/x
  3. Step 3: Cross multiply
    28,720.02x = 43,017.66 × 13,897.84
  4. Step 4: Simplify right side
    28,720.02x = 597,852,555.85
  5. Step 5: Solve for x
    x = 597,852,555.85/28,720.02
  6. Step 6: Final answer
    x = 20,816.58

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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.