Home / 28,204.02-38,921.90-18,135.77

Finding the Fourth Proportional to 28,204.02, 38,921.90 and 18,135.77

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Solution

The fourth proportional to 28,204.02, 38,921.90 and 18,135.77 is: 25,027.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.02 : 38,921.90 = 18,135.77 : x
  2. Step 2: Convert to fraction form
    28,204.02/38,921.90 = 18,135.77/x
  3. Step 3: Cross multiply
    28,204.02x = 38,921.90 × 18,135.77
  4. Step 4: Simplify right side
    28,204.02x = 705,878,341.07
  5. Step 5: Solve for x
    x = 705,878,341.07/28,204.02
  6. Step 6: Final answer
    x = 25,027.58

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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.