Home / 37,779.71-52,136.12-20,785.70

Finding the Fourth Proportional to 37,779.71, 52,136.12 and 20,785.70

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Solution

The fourth proportional to 37,779.71, 52,136.12 and 20,785.70 is: 28,684.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,779.71 : 52,136.12 = 20,785.70 : x
  2. Step 2: Convert to fraction form
    37,779.71/52,136.12 = 20,785.70/x
  3. Step 3: Cross multiply
    37,779.71x = 52,136.12 × 20,785.70
  4. Step 4: Simplify right side
    37,779.71x = 1,083,685,384.87
  5. Step 5: Solve for x
    x = 1,083,685,384.87/37,779.71
  6. Step 6: Final answer
    x = 28,684.33

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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.