Home / 30,626.78-42,269.58-18,697.06

Finding the Fourth Proportional to 30,626.78, 42,269.58 and 18,697.06

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Solution

The fourth proportional to 30,626.78, 42,269.58 and 18,697.06 is: 25,804.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,626.78 : 42,269.58 = 18,697.06 : x
  2. Step 2: Convert to fraction form
    30,626.78/42,269.58 = 18,697.06/x
  3. Step 3: Cross multiply
    30,626.78x = 42,269.58 × 18,697.06
  4. Step 4: Simplify right side
    30,626.78x = 790,316,873.43
  5. Step 5: Solve for x
    x = 790,316,873.43/30,626.78
  6. Step 6: Final answer
    x = 25,804.77

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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.