Home / 20,339.64-30,490.02-12,925.71

Finding the Fourth Proportional to 20,339.64, 30,490.02 and 12,925.71

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Solution

The fourth proportional to 20,339.64, 30,490.02 and 12,925.71 is: 19,376.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.64 : 30,490.02 = 12,925.71 : x
  2. Step 2: Convert to fraction form
    20,339.64/30,490.02 = 12,925.71/x
  3. Step 3: Cross multiply
    20,339.64x = 30,490.02 × 12,925.71
  4. Step 4: Simplify right side
    20,339.64x = 394,105,156.41
  5. Step 5: Solve for x
    x = 394,105,156.41/20,339.64
  6. Step 6: Final answer
    x = 19,376.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.