Home / 16,690.68-23,038.26-9,621.81

Finding the Fourth Proportional to 16,690.68, 23,038.26 and 9,621.81

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Solution

The fourth proportional to 16,690.68, 23,038.26 and 9,621.81 is: 13,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,690.68 : 23,038.26 = 9,621.81 : x
  2. Step 2: Convert to fraction form
    16,690.68/23,038.26 = 9,621.81/x
  3. Step 3: Cross multiply
    16,690.68x = 23,038.26 × 9,621.81
  4. Step 4: Simplify right side
    16,690.68x = 221,669,760.45
  5. Step 5: Solve for x
    x = 221,669,760.45/16,690.68
  6. Step 6: Final answer
    x = 13,281.05

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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.