Home / 27,157.80-37,478.70-15,220.74

Finding the Fourth Proportional to 27,157.80, 37,478.70 and 15,220.74

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Solution

The fourth proportional to 27,157.80, 37,478.70 and 15,220.74 is: 21,005.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,157.80 : 37,478.70 = 15,220.74 : x
  2. Step 2: Convert to fraction form
    27,157.80/37,478.70 = 15,220.74/x
  3. Step 3: Cross multiply
    27,157.80x = 37,478.70 × 15,220.74
  4. Step 4: Simplify right side
    27,157.80x = 570,453,548.24
  5. Step 5: Solve for x
    x = 570,453,548.24/27,157.80
  6. Step 6: Final answer
    x = 21,005.15

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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.