Home / 28,126.55-42,201.47-12,323.43

Finding the Fourth Proportional to 28,126.55, 42,201.47 and 12,323.43

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Solution

The fourth proportional to 28,126.55, 42,201.47 and 12,323.43 is: 18,490.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.55 : 42,201.47 = 12,323.43 : x
  2. Step 2: Convert to fraction form
    28,126.55/42,201.47 = 12,323.43/x
  3. Step 3: Cross multiply
    28,126.55x = 42,201.47 × 12,323.43
  4. Step 4: Simplify right side
    28,126.55x = 520,066,892.25
  5. Step 5: Solve for x
    x = 520,066,892.25/28,126.55
  6. Step 6: Final answer
    x = 18,490.25

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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.