Home / 18,957.69-28,415.35-7,100.05

Finding the Fourth Proportional to 18,957.69, 28,415.35 and 7,100.05

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Solution

The fourth proportional to 18,957.69, 28,415.35 and 7,100.05 is: 10,642.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.69 : 28,415.35 = 7,100.05 : x
  2. Step 2: Convert to fraction form
    18,957.69/28,415.35 = 7,100.05/x
  3. Step 3: Cross multiply
    18,957.69x = 28,415.35 × 7,100.05
  4. Step 4: Simplify right side
    18,957.69x = 201,750,370.27
  5. Step 5: Solve for x
    x = 201,750,370.27/18,957.69
  6. Step 6: Final answer
    x = 10,642.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.