Home / 28,688.74-39,589.67-15,941.59

Finding the Fourth Proportional to 28,688.74, 39,589.67 and 15,941.59

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Solution

The fourth proportional to 28,688.74, 39,589.67 and 15,941.59 is: 21,998.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.74 : 39,589.67 = 15,941.59 : x
  2. Step 2: Convert to fraction form
    28,688.74/39,589.67 = 15,941.59/x
  3. Step 3: Cross multiply
    28,688.74x = 39,589.67 × 15,941.59
  4. Step 4: Simplify right side
    28,688.74x = 631,122,108.69
  5. Step 5: Solve for x
    x = 631,122,108.69/28,688.74
  6. Step 6: Final answer
    x = 21,998.95

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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.