Home / 30,931.92-42,685.92-16,784.87

Finding the Fourth Proportional to 30,931.92, 42,685.92 and 16,784.87

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Solution

The fourth proportional to 30,931.92, 42,685.92 and 16,784.87 is: 23,163.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,931.92 : 42,685.92 = 16,784.87 : x
  2. Step 2: Convert to fraction form
    30,931.92/42,685.92 = 16,784.87/x
  3. Step 3: Cross multiply
    30,931.92x = 42,685.92 × 16,784.87
  4. Step 4: Simplify right side
    30,931.92x = 716,477,404.60
  5. Step 5: Solve for x
    x = 716,477,404.60/30,931.92
  6. Step 6: Final answer
    x = 23,163.04

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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.