Home / 30,715.08-42,386.76-17,286.43

Finding the Fourth Proportional to 30,715.08, 42,386.76 and 17,286.43

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Solution

The fourth proportional to 30,715.08, 42,386.76 and 17,286.43 is: 23,855.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,715.08 : 42,386.76 = 17,286.43 : x
  2. Step 2: Convert to fraction form
    30,715.08/42,386.76 = 17,286.43/x
  3. Step 3: Cross multiply
    30,715.08x = 42,386.76 × 17,286.43
  4. Step 4: Simplify right side
    30,715.08x = 732,715,547.73
  5. Step 5: Solve for x
    x = 732,715,547.73/30,715.08
  6. Step 6: Final answer
    x = 23,855.24

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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.