Home / 31,758.58-47,642.73-8,386.84

Finding the Fourth Proportional to 31,758.58, 47,642.73 and 8,386.84

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Solution

The fourth proportional to 31,758.58, 47,642.73 and 8,386.84 is: 12,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,758.58 : 47,642.73 = 8,386.84 : x
  2. Step 2: Convert to fraction form
    31,758.58/47,642.73 = 8,386.84/x
  3. Step 3: Cross multiply
    31,758.58x = 47,642.73 × 8,386.84
  4. Step 4: Simplify right side
    31,758.58x = 399,571,953.67
  5. Step 5: Solve for x
    x = 399,571,953.67/31,758.58
  6. Step 6: Final answer
    x = 12,581.54

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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.