Home / 15,621.75-21,559.10-10,307.34

Finding the Fourth Proportional to 15,621.75, 21,559.10 and 10,307.34

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Solution

The fourth proportional to 15,621.75, 21,559.10 and 10,307.34 is: 14,224.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.75 : 21,559.10 = 10,307.34 : x
  2. Step 2: Convert to fraction form
    15,621.75/21,559.10 = 10,307.34/x
  3. Step 3: Cross multiply
    15,621.75x = 21,559.10 × 10,307.34
  4. Step 4: Simplify right side
    15,621.75x = 222,216,922.26
  5. Step 5: Solve for x
    x = 222,216,922.26/15,621.75
  6. Step 6: Final answer
    x = 14,224.84

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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.