Home / 15,816.07-21,826.47-8,742.34

Finding the Fourth Proportional to 15,816.07, 21,826.47 and 8,742.34

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Solution

The fourth proportional to 15,816.07, 21,826.47 and 8,742.34 is: 12,064.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.07 : 21,826.47 = 8,742.34 : x
  2. Step 2: Convert to fraction form
    15,816.07/21,826.47 = 8,742.34/x
  3. Step 3: Cross multiply
    15,816.07x = 21,826.47 × 8,742.34
  4. Step 4: Simplify right side
    15,816.07x = 190,814,421.74
  5. Step 5: Solve for x
    x = 190,814,421.74/15,816.07
  6. Step 6: Final answer
    x = 12,064.59

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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.