Home / 28,963.47-39,973.32-16,221.50

Finding the Fourth Proportional to 28,963.47, 39,973.32 and 16,221.50

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Solution

The fourth proportional to 28,963.47, 39,973.32 and 16,221.50 is: 22,387.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,963.47 : 39,973.32 = 16,221.50 : x
  2. Step 2: Convert to fraction form
    28,963.47/39,973.32 = 16,221.50/x
  3. Step 3: Cross multiply
    28,963.47x = 39,973.32 × 16,221.50
  4. Step 4: Simplify right side
    28,963.47x = 648,427,010.51
  5. Step 5: Solve for x
    x = 648,427,010.51/28,963.47
  6. Step 6: Final answer
    x = 22,387.75

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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.