Home / 16,621.51-22,941.78-12,838.90

Finding the Fourth Proportional to 16,621.51, 22,941.78 and 12,838.90

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Solution

The fourth proportional to 16,621.51, 22,941.78 and 12,838.90 is: 17,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,621.51 : 22,941.78 = 12,838.90 : x
  2. Step 2: Convert to fraction form
    16,621.51/22,941.78 = 12,838.90/x
  3. Step 3: Cross multiply
    16,621.51x = 22,941.78 × 12,838.90
  4. Step 4: Simplify right side
    16,621.51x = 294,547,219.24
  5. Step 5: Solve for x
    x = 294,547,219.24/16,621.51
  6. Step 6: Final answer
    x = 17,720.85

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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.