Home / 15,725.21-21,700.85-9,010.98

Finding the Fourth Proportional to 15,725.21, 21,700.85 and 9,010.98

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Solution

The fourth proportional to 15,725.21, 21,700.85 and 9,010.98 is: 12,435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.21 : 21,700.85 = 9,010.98 : x
  2. Step 2: Convert to fraction form
    15,725.21/21,700.85 = 9,010.98/x
  3. Step 3: Cross multiply
    15,725.21x = 21,700.85 × 9,010.98
  4. Step 4: Simplify right side
    15,725.21x = 195,545,880.28
  5. Step 5: Solve for x
    x = 195,545,880.28/15,725.21
  6. Step 6: Final answer
    x = 12,435.19

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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.