Home / 28,454.23-39,263.21-15,879.51

Finding the Fourth Proportional to 28,454.23, 39,263.21 and 15,879.51

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Solution

The fourth proportional to 28,454.23, 39,263.21 and 15,879.51 is: 21,911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.23 : 39,263.21 = 15,879.51 : x
  2. Step 2: Convert to fraction form
    28,454.23/39,263.21 = 15,879.51/x
  3. Step 3: Cross multiply
    28,454.23x = 39,263.21 × 15,879.51
  4. Step 4: Simplify right side
    28,454.23x = 623,480,535.83
  5. Step 5: Solve for x
    x = 623,480,535.83/28,454.23
  6. Step 6: Final answer
    x = 21,911.70

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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.