Home / 21,607.50-29,806.26-12,653.28

Finding the Fourth Proportional to 21,607.50, 29,806.26 and 12,653.28

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Solution

The fourth proportional to 21,607.50, 29,806.26 and 12,653.28 is: 17,454.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,607.50 : 29,806.26 = 12,653.28 : x
  2. Step 2: Convert to fraction form
    21,607.50/29,806.26 = 12,653.28/x
  3. Step 3: Cross multiply
    21,607.50x = 29,806.26 × 12,653.28
  4. Step 4: Simplify right side
    21,607.50x = 377,146,953.53
  5. Step 5: Solve for x
    x = 377,146,953.53/21,607.50
  6. Step 6: Final answer
    x = 17,454.45

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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.