Home / 30,935.84-42,700.56-18,840.80

Finding the Fourth Proportional to 30,935.84, 42,700.56 and 18,840.80

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Solution

The fourth proportional to 30,935.84, 42,700.56 and 18,840.80 is: 26,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.84 : 42,700.56 = 18,840.80 : x
  2. Step 2: Convert to fraction form
    30,935.84/42,700.56 = 18,840.80/x
  3. Step 3: Cross multiply
    30,935.84x = 42,700.56 × 18,840.80
  4. Step 4: Simplify right side
    30,935.84x = 804,512,710.85
  5. Step 5: Solve for x
    x = 804,512,710.85/30,935.84
  6. Step 6: Final answer
    x = 26,005.85

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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.