Home / 28,457.52-39,269.78-15,883.08

Finding the Fourth Proportional to 28,457.52, 39,269.78 and 15,883.08

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Solution

The fourth proportional to 28,457.52, 39,269.78 and 15,883.08 is: 21,917.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,457.52 : 39,269.78 = 15,883.08 : x
  2. Step 2: Convert to fraction form
    28,457.52/39,269.78 = 15,883.08/x
  3. Step 3: Cross multiply
    28,457.52x = 39,269.78 × 15,883.08
  4. Step 4: Simplify right side
    28,457.52x = 623,725,057.32
  5. Step 5: Solve for x
    x = 623,725,057.32/28,457.52
  6. Step 6: Final answer
    x = 21,917.76

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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.