Home / 30,898.22-42,636.39-18,962.06

Finding the Fourth Proportional to 30,898.22, 42,636.39 and 18,962.06

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Solution

The fourth proportional to 30,898.22, 42,636.39 and 18,962.06 is: 26,165.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,898.22 : 42,636.39 = 18,962.06 : x
  2. Step 2: Convert to fraction form
    30,898.22/42,636.39 = 18,962.06/x
  3. Step 3: Cross multiply
    30,898.22x = 42,636.39 × 18,962.06
  4. Step 4: Simplify right side
    30,898.22x = 808,473,785.36
  5. Step 5: Solve for x
    x = 808,473,785.36/30,898.22
  6. Step 6: Final answer
    x = 26,165.71

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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.