Home / 27,121.31-37,430.95-15,790.99

Finding the Fourth Proportional to 27,121.31, 37,430.95 and 15,790.99

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Solution

The fourth proportional to 27,121.31, 37,430.95 and 15,790.99 is: 21,793.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,121.31 : 37,430.95 = 15,790.99 : x
  2. Step 2: Convert to fraction form
    27,121.31/37,430.95 = 15,790.99/x
  3. Step 3: Cross multiply
    27,121.31x = 37,430.95 × 15,790.99
  4. Step 4: Simplify right side
    27,121.31x = 591,071,973.34
  5. Step 5: Solve for x
    x = 591,071,973.34/27,121.31
  6. Step 6: Final answer
    x = 21,793.64

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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.