Home / 16,639.64-22,931.01-11,915.72

Finding the Fourth Proportional to 16,639.64, 22,931.01 and 11,915.72

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Solution

The fourth proportional to 16,639.64, 22,931.01 and 11,915.72 is: 16,421.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,639.64 : 22,931.01 = 11,915.72 : x
  2. Step 2: Convert to fraction form
    16,639.64/22,931.01 = 11,915.72/x
  3. Step 3: Cross multiply
    16,639.64x = 22,931.01 × 11,915.72
  4. Step 4: Simplify right side
    16,639.64x = 273,239,494.48
  5. Step 5: Solve for x
    x = 273,239,494.48/16,639.64
  6. Step 6: Final answer
    x = 16,421.00

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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.