Home / 12,878.58-19,315.59-5,856.95

Finding the Fourth Proportional to 12,878.58, 19,315.59 and 5,856.95

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Solution

The fourth proportional to 12,878.58, 19,315.59 and 5,856.95 is: 8,784.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.58 : 19,315.59 = 5,856.95 : x
  2. Step 2: Convert to fraction form
    12,878.58/19,315.59 = 5,856.95/x
  3. Step 3: Cross multiply
    12,878.58x = 19,315.59 × 5,856.95
  4. Step 4: Simplify right side
    12,878.58x = 113,130,362.53
  5. Step 5: Solve for x
    x = 113,130,362.53/12,878.58
  6. Step 6: Final answer
    x = 8,784.38

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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.