Home / 30,870.71-46,306.30-8,686.33

Finding the Fourth Proportional to 30,870.71, 46,306.30 and 8,686.33

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Solution

The fourth proportional to 30,870.71, 46,306.30 and 8,686.33 is: 13,029.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,870.71 : 46,306.30 = 8,686.33 : x
  2. Step 2: Convert to fraction form
    30,870.71/46,306.30 = 8,686.33/x
  3. Step 3: Cross multiply
    30,870.71x = 46,306.30 × 8,686.33
  4. Step 4: Simplify right side
    30,870.71x = 402,231,759.45
  5. Step 5: Solve for x
    x = 402,231,759.45/30,870.71
  6. Step 6: Final answer
    x = 13,029.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.