Home / 15,417.94-21,275.98-8,611.50

Finding the Fourth Proportional to 15,417.94, 21,275.98 and 8,611.50

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Solution

The fourth proportional to 15,417.94, 21,275.98 and 8,611.50 is: 11,883.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.94 : 21,275.98 = 8,611.50 : x
  2. Step 2: Convert to fraction form
    15,417.94/21,275.98 = 8,611.50/x
  3. Step 3: Cross multiply
    15,417.94x = 21,275.98 × 8,611.50
  4. Step 4: Simplify right side
    15,417.94x = 183,218,101.77
  5. Step 5: Solve for x
    x = 183,218,101.77/15,417.94
  6. Step 6: Final answer
    x = 11,883.44

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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.