Home / 28,308.49-39,070.43-16,378.81

Finding the Fourth Proportional to 28,308.49, 39,070.43 and 16,378.81

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Solution

The fourth proportional to 28,308.49, 39,070.43 and 16,378.81 is: 22,605.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,308.49 : 39,070.43 = 16,378.81 : x
  2. Step 2: Convert to fraction form
    28,308.49/39,070.43 = 16,378.81/x
  3. Step 3: Cross multiply
    28,308.49x = 39,070.43 × 16,378.81
  4. Step 4: Simplify right side
    28,308.49x = 639,927,149.59
  5. Step 5: Solve for x
    x = 639,927,149.59/28,308.49
  6. Step 6: Final answer
    x = 22,605.49

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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.