Home / 28,305.95-39,061.77-15,558.86

Finding the Fourth Proportional to 28,305.95, 39,061.77 and 15,558.86

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Solution

The fourth proportional to 28,305.95, 39,061.77 and 15,558.86 is: 21,470.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.95 : 39,061.77 = 15,558.86 : x
  2. Step 2: Convert to fraction form
    28,305.95/39,061.77 = 15,558.86/x
  3. Step 3: Cross multiply
    28,305.95x = 39,061.77 × 15,558.86
  4. Step 4: Simplify right side
    28,305.95x = 607,756,384.78
  5. Step 5: Solve for x
    x = 607,756,384.78/28,305.95
  6. Step 6: Final answer
    x = 21,470.98

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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.