Home / 18,901.04-28,290.93-12,561.38

Finding the Fourth Proportional to 18,901.04, 28,290.93 and 12,561.38

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Solution

The fourth proportional to 18,901.04, 28,290.93 and 12,561.38 is: 18,801.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.04 : 28,290.93 = 12,561.38 : x
  2. Step 2: Convert to fraction form
    18,901.04/28,290.93 = 12,561.38/x
  3. Step 3: Cross multiply
    18,901.04x = 28,290.93 × 12,561.38
  4. Step 4: Simplify right side
    18,901.04x = 355,372,918.02
  5. Step 5: Solve for x
    x = 355,372,918.02/18,901.04
  6. Step 6: Final answer
    x = 18,801.77

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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.