Home / 12,117.02-16,720.95-6,811.70

Finding the Fourth Proportional to 12,117.02, 16,720.95 and 6,811.70

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Solution

The fourth proportional to 12,117.02, 16,720.95 and 6,811.70 is: 9,399.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.02 : 16,720.95 = 6,811.70 : x
  2. Step 2: Convert to fraction form
    12,117.02/16,720.95 = 6,811.70/x
  3. Step 3: Cross multiply
    12,117.02x = 16,720.95 × 6,811.70
  4. Step 4: Simplify right side
    12,117.02x = 113,898,095.12
  5. Step 5: Solve for x
    x = 113,898,095.12/12,117.02
  6. Step 6: Final answer
    x = 9,399.84

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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.