Home / 15,782.24-21,621.52-15,191.36

Finding the Fourth Proportional to 15,782.24, 21,621.52 and 15,191.36

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Solution

The fourth proportional to 15,782.24, 21,621.52 and 15,191.36 is: 20,812.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,782.24 : 21,621.52 = 15,191.36 : x
  2. Step 2: Convert to fraction form
    15,782.24/21,621.52 = 15,191.36/x
  3. Step 3: Cross multiply
    15,782.24x = 21,621.52 × 15,191.36
  4. Step 4: Simplify right side
    15,782.24x = 328,460,294.07
  5. Step 5: Solve for x
    x = 328,460,294.07/15,782.24
  6. Step 6: Final answer
    x = 20,812.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.