Home / 38,518.98-53,156.13-21,751.98

Finding the Fourth Proportional to 38,518.98, 53,156.13 and 21,751.98

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Solution

The fourth proportional to 38,518.98, 53,156.13 and 21,751.98 is: 30,017.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,518.98 : 53,156.13 = 21,751.98 : x
  2. Step 2: Convert to fraction form
    38,518.98/53,156.13 = 21,751.98/x
  3. Step 3: Cross multiply
    38,518.98x = 53,156.13 × 21,751.98
  4. Step 4: Simplify right side
    38,518.98x = 1,156,251,076.64
  5. Step 5: Solve for x
    x = 1,156,251,076.64/38,518.98
  6. Step 6: Final answer
    x = 30,017.70

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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.