Home / 28,451.64-39,263.27-15,876.39

Finding the Fourth Proportional to 28,451.64, 39,263.27 and 15,876.39

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Solution

The fourth proportional to 28,451.64, 39,263.27 and 15,876.39 is: 21,909.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.64 : 39,263.27 = 15,876.39 : x
  2. Step 2: Convert to fraction form
    28,451.64/39,263.27 = 15,876.39/x
  3. Step 3: Cross multiply
    28,451.64x = 39,263.27 × 15,876.39
  4. Step 4: Simplify right side
    28,451.64x = 623,358,907.81
  5. Step 5: Solve for x
    x = 623,358,907.81/28,451.64
  6. Step 6: Final answer
    x = 21,909.42

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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.