Home / 18,743.10-28,106.40-9,975.93

Finding the Fourth Proportional to 18,743.10, 28,106.40 and 9,975.93

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Solution

The fourth proportional to 18,743.10, 28,106.40 and 9,975.93 is: 14,959.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.10 : 28,106.40 = 9,975.93 : x
  2. Step 2: Convert to fraction form
    18,743.10/28,106.40 = 9,975.93/x
  3. Step 3: Cross multiply
    18,743.10x = 28,106.40 × 9,975.93
  4. Step 4: Simplify right side
    18,743.10x = 280,387,478.95
  5. Step 5: Solve for x
    x = 280,387,478.95/18,743.10
  6. Step 6: Final answer
    x = 14,959.50

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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.