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Finding the Fourth Proportional to 22,907.90, 34,387.45 and 21,403.90

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Solution

The fourth proportional to 22,907.90, 34,387.45 and 21,403.90 is: 32,129.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,907.90 : 34,387.45 = 21,403.90 : x
  2. Step 2: Convert to fraction form
    22,907.90/34,387.45 = 21,403.90/x
  3. Step 3: Cross multiply
    22,907.90x = 34,387.45 × 21,403.90
  4. Step 4: Simplify right side
    22,907.90x = 736,025,541.06
  5. Step 5: Solve for x
    x = 736,025,541.06/22,907.90
  6. Step 6: Final answer
    x = 32,129.77

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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.