Home / 15,368.15-21,206.30-8,653.61

Finding the Fourth Proportional to 15,368.15, 21,206.30 and 8,653.61

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Solution

The fourth proportional to 15,368.15, 21,206.30 and 8,653.61 is: 11,941.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,368.15 : 21,206.30 = 8,653.61 : x
  2. Step 2: Convert to fraction form
    15,368.15/21,206.30 = 8,653.61/x
  3. Step 3: Cross multiply
    15,368.15x = 21,206.30 × 8,653.61
  4. Step 4: Simplify right side
    15,368.15x = 183,511,059.49
  5. Step 5: Solve for x
    x = 183,511,059.49/15,368.15
  6. Step 6: Final answer
    x = 11,941.00

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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.