Home / 28,364.36-39,138.54-16,428.86

Finding the Fourth Proportional to 28,364.36, 39,138.54 and 16,428.86

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Solution

The fourth proportional to 28,364.36, 39,138.54 and 16,428.86 is: 22,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.36 : 39,138.54 = 16,428.86 : x
  2. Step 2: Convert to fraction form
    28,364.36/39,138.54 = 16,428.86/x
  3. Step 3: Cross multiply
    28,364.36x = 39,138.54 × 16,428.86
  4. Step 4: Simplify right side
    28,364.36x = 643,001,594.26
  5. Step 5: Solve for x
    x = 643,001,594.26/28,364.36
  6. Step 6: Final answer
    x = 22,669.35

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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.