Home / 20,941.81-31,417.88-10,416.82

Finding the Fourth Proportional to 20,941.81, 31,417.88 and 10,416.82

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Solution

The fourth proportional to 20,941.81, 31,417.88 and 10,416.82 is: 15,627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.81 : 31,417.88 = 10,416.82 : x
  2. Step 2: Convert to fraction form
    20,941.81/31,417.88 = 10,416.82/x
  3. Step 3: Cross multiply
    20,941.81x = 31,417.88 × 10,416.82
  4. Step 4: Simplify right side
    20,941.81x = 327,274,329.02
  5. Step 5: Solve for x
    x = 327,274,329.02/20,941.81
  6. Step 6: Final answer
    x = 15,627.80

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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.