Home / 37,421.72-51,650.80-21,515.40

Finding the Fourth Proportional to 37,421.72, 51,650.80 and 21,515.40

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Solution

The fourth proportional to 37,421.72, 51,650.80 and 21,515.40 is: 29,696.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,421.72 : 51,650.80 = 21,515.40 : x
  2. Step 2: Convert to fraction form
    37,421.72/51,650.80 = 21,515.40/x
  3. Step 3: Cross multiply
    37,421.72x = 51,650.80 × 21,515.40
  4. Step 4: Simplify right side
    37,421.72x = 1,111,287,622.32
  5. Step 5: Solve for x
    x = 1,111,287,622.32/37,421.72
  6. Step 6: Final answer
    x = 29,696.33

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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.