Home / 16,485.40-22,749.85-8,931.78

Finding the Fourth Proportional to 16,485.40, 22,749.85 and 8,931.78

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Solution

The fourth proportional to 16,485.40, 22,749.85 and 8,931.78 is: 12,325.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,485.40 : 22,749.85 = 8,931.78 : x
  2. Step 2: Convert to fraction form
    16,485.40/22,749.85 = 8,931.78/x
  3. Step 3: Cross multiply
    16,485.40x = 22,749.85 × 8,931.78
  4. Step 4: Simplify right side
    16,485.40x = 203,196,666.40
  5. Step 5: Solve for x
    x = 203,196,666.40/16,485.40
  6. Step 6: Final answer
    x = 12,325.86

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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.