Home / 28,334.86-39,101.36-16,398.40

Finding the Fourth Proportional to 28,334.86, 39,101.36 and 16,398.40

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Solution

The fourth proportional to 28,334.86, 39,101.36 and 16,398.40 is: 22,629.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,334.86 : 39,101.36 = 16,398.40 : x
  2. Step 2: Convert to fraction form
    28,334.86/39,101.36 = 16,398.40/x
  3. Step 3: Cross multiply
    28,334.86x = 39,101.36 × 16,398.40
  4. Step 4: Simplify right side
    28,334.86x = 641,199,681.51
  5. Step 5: Solve for x
    x = 641,199,681.51/28,334.86
  6. Step 6: Final answer
    x = 22,629.36

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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.