Home / 28,220.04-38,943.60-16,890.06

Finding the Fourth Proportional to 28,220.04, 38,943.60 and 16,890.06

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Solution

The fourth proportional to 28,220.04, 38,943.60 and 16,890.06 is: 23,308.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.04 : 38,943.60 = 16,890.06 : x
  2. Step 2: Convert to fraction form
    28,220.04/38,943.60 = 16,890.06/x
  3. Step 3: Cross multiply
    28,220.04x = 38,943.60 × 16,890.06
  4. Step 4: Simplify right side
    28,220.04x = 657,759,740.62
  5. Step 5: Solve for x
    x = 657,759,740.62/28,220.04
  6. Step 6: Final answer
    x = 23,308.25

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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.