Home / 30,717.18-42,381.23-17,287.65

Finding the Fourth Proportional to 30,717.18, 42,381.23 and 17,287.65

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Solution

The fourth proportional to 30,717.18, 42,381.23 and 17,287.65 is: 23,852.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,717.18 : 42,381.23 = 17,287.65 : x
  2. Step 2: Convert to fraction form
    30,717.18/42,381.23 = 17,287.65/x
  3. Step 3: Cross multiply
    30,717.18x = 42,381.23 × 17,287.65
  4. Step 4: Simplify right side
    30,717.18x = 732,671,784.37
  5. Step 5: Solve for x
    x = 732,671,784.37/30,717.18
  6. Step 6: Final answer
    x = 23,852.18

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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.