Home / 21,157.65-31,725.54-10,616.31

Finding the Fourth Proportional to 21,157.65, 31,725.54 and 10,616.31

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Solution

The fourth proportional to 21,157.65, 31,725.54 and 10,616.31 is: 15,918.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.65 : 31,725.54 = 10,616.31 : x
  2. Step 2: Convert to fraction form
    21,157.65/31,725.54 = 10,616.31/x
  3. Step 3: Cross multiply
    21,157.65x = 31,725.54 × 10,616.31
  4. Step 4: Simplify right side
    21,157.65x = 336,808,167.56
  5. Step 5: Solve for x
    x = 336,808,167.56/21,157.65
  6. Step 6: Final answer
    x = 15,918.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.