Home / 15,722.10-21,685.32-13,024.80

Finding the Fourth Proportional to 15,722.10, 21,685.32 and 13,024.80

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Solution

The fourth proportional to 15,722.10, 21,685.32 and 13,024.80 is: 17,964.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.10 : 21,685.32 = 13,024.80 : x
  2. Step 2: Convert to fraction form
    15,722.10/21,685.32 = 13,024.80/x
  3. Step 3: Cross multiply
    15,722.10x = 21,685.32 × 13,024.80
  4. Step 4: Simplify right side
    15,722.10x = 282,446,955.94
  5. Step 5: Solve for x
    x = 282,446,955.94/15,722.10
  6. Step 6: Final answer
    x = 17,964.96

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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.