Home / 21,748.57-30,012.02-12,317.20

Finding the Fourth Proportional to 21,748.57, 30,012.02 and 12,317.20

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Solution

The fourth proportional to 21,748.57, 30,012.02 and 12,317.20 is: 16,997.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,748.57 : 30,012.02 = 12,317.20 : x
  2. Step 2: Convert to fraction form
    21,748.57/30,012.02 = 12,317.20/x
  3. Step 3: Cross multiply
    21,748.57x = 30,012.02 × 12,317.20
  4. Step 4: Simplify right side
    21,748.57x = 369,664,052.74
  5. Step 5: Solve for x
    x = 369,664,052.74/21,748.57
  6. Step 6: Final answer
    x = 16,997.17

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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.