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Finding the Fourth Proportional to 30,446.65, 42,018.36 and 17,018.47

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Solution

The fourth proportional to 30,446.65, 42,018.36 and 17,018.47 is: 23,486.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,446.65 : 42,018.36 = 17,018.47 : x
  2. Step 2: Convert to fraction form
    30,446.65/42,018.36 = 17,018.47/x
  3. Step 3: Cross multiply
    30,446.65x = 42,018.36 × 17,018.47
  4. Step 4: Simplify right side
    30,446.65x = 715,088,199.11
  5. Step 5: Solve for x
    x = 715,088,199.11/30,446.65
  6. Step 6: Final answer
    x = 23,486.60

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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.