Home / 21,339.84-31,946.58-15,817.98

Finding the Fourth Proportional to 21,339.84, 31,946.58 and 15,817.98

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Solution

The fourth proportional to 21,339.84, 31,946.58 and 15,817.98 is: 23,680.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.84 : 31,946.58 = 15,817.98 : x
  2. Step 2: Convert to fraction form
    21,339.84/31,946.58 = 15,817.98/x
  3. Step 3: Cross multiply
    21,339.84x = 31,946.58 × 15,817.98
  4. Step 4: Simplify right side
    21,339.84x = 505,330,363.51
  5. Step 5: Solve for x
    x = 505,330,363.51/21,339.84
  6. Step 6: Final answer
    x = 23,680.14

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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.