Home / 39,597.16-54,643.98-21,692.20

Finding the Fourth Proportional to 39,597.16, 54,643.98 and 21,692.20

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Solution

The fourth proportional to 39,597.16, 54,643.98 and 21,692.20 is: 29,935.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,597.16 : 54,643.98 = 21,692.20 : x
  2. Step 2: Convert to fraction form
    39,597.16/54,643.98 = 21,692.20/x
  3. Step 3: Cross multiply
    39,597.16x = 54,643.98 × 21,692.20
  4. Step 4: Simplify right side
    39,597.16x = 1,185,348,142.96
  5. Step 5: Solve for x
    x = 1,185,348,142.96/39,597.16
  6. Step 6: Final answer
    x = 29,935.18

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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.