Home / 21,492.68-29,658.41-11,931.81

Finding the Fourth Proportional to 21,492.68, 29,658.41 and 11,931.81

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Solution

The fourth proportional to 21,492.68, 29,658.41 and 11,931.81 is: 16,465.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,492.68 : 29,658.41 = 11,931.81 : x
  2. Step 2: Convert to fraction form
    21,492.68/29,658.41 = 11,931.81/x
  3. Step 3: Cross multiply
    21,492.68x = 29,658.41 × 11,931.81
  4. Step 4: Simplify right side
    21,492.68x = 353,878,453.36
  5. Step 5: Solve for x
    x = 353,878,453.36/21,492.68
  6. Step 6: Final answer
    x = 16,465.07

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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.