Home / 30,686.65-42,292.52-22,715.03

Finding the Fourth Proportional to 30,686.65, 42,292.52 and 22,715.03

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Solution

The fourth proportional to 30,686.65, 42,292.52 and 22,715.03 is: 31,305.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,686.65 : 42,292.52 = 22,715.03 : x
  2. Step 2: Convert to fraction form
    30,686.65/42,292.52 = 22,715.03/x
  3. Step 3: Cross multiply
    30,686.65x = 42,292.52 × 22,715.03
  4. Step 4: Simplify right side
    30,686.65x = 960,675,860.58
  5. Step 5: Solve for x
    x = 960,675,860.58/30,686.65
  6. Step 6: Final answer
    x = 31,305.99

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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.