Home / 15,718.84-21,692.26-9,005.05

Finding the Fourth Proportional to 15,718.84, 21,692.26 and 9,005.05

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Solution

The fourth proportional to 15,718.84, 21,692.26 and 9,005.05 is: 12,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,718.84 : 21,692.26 = 9,005.05 : x
  2. Step 2: Convert to fraction form
    15,718.84/21,692.26 = 9,005.05/x
  3. Step 3: Cross multiply
    15,718.84x = 21,692.26 × 9,005.05
  4. Step 4: Simplify right side
    15,718.84x = 195,339,840.89
  5. Step 5: Solve for x
    x = 195,339,840.89/15,718.84
  6. Step 6: Final answer
    x = 12,427.12

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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.