Home / 15,783.18-21,782.30-11,797.35

Finding the Fourth Proportional to 15,783.18, 21,782.30 and 11,797.35

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Solution

The fourth proportional to 15,783.18, 21,782.30 and 11,797.35 is: 16,281.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,783.18 : 21,782.30 = 11,797.35 : x
  2. Step 2: Convert to fraction form
    15,783.18/21,782.30 = 11,797.35/x
  3. Step 3: Cross multiply
    15,783.18x = 21,782.30 × 11,797.35
  4. Step 4: Simplify right side
    15,783.18x = 256,973,357.92
  5. Step 5: Solve for x
    x = 256,973,357.92/15,783.18
  6. Step 6: Final answer
    x = 16,281.47

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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.