Home / 15,185.42-20,957.70-8,897.79

Finding the Fourth Proportional to 15,185.42, 20,957.70 and 8,897.79

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Solution

The fourth proportional to 15,185.42, 20,957.70 and 8,897.79 is: 12,280.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.42 : 20,957.70 = 8,897.79 : x
  2. Step 2: Convert to fraction form
    15,185.42/20,957.70 = 8,897.79/x
  3. Step 3: Cross multiply
    15,185.42x = 20,957.70 × 8,897.79
  4. Step 4: Simplify right side
    15,185.42x = 186,477,213.48
  5. Step 5: Solve for x
    x = 186,477,213.48/15,185.42
  6. Step 6: Final answer
    x = 12,280.02

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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.