Home / 30,590.20-42,216.16-17,165.72

Finding the Fourth Proportional to 30,590.20, 42,216.16 and 17,165.72

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Solution

The fourth proportional to 30,590.20, 42,216.16 and 17,165.72 is: 23,689.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,590.20 : 42,216.16 = 17,165.72 : x
  2. Step 2: Convert to fraction form
    30,590.20/42,216.16 = 17,165.72/x
  3. Step 3: Cross multiply
    30,590.20x = 42,216.16 × 17,165.72
  4. Step 4: Simplify right side
    30,590.20x = 724,670,782.04
  5. Step 5: Solve for x
    x = 724,670,782.04/30,590.20
  6. Step 6: Final answer
    x = 23,689.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.