Home / 15,714.75-21,686.37-9,430.77

Finding the Fourth Proportional to 15,714.75, 21,686.37 and 9,430.77

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Solution

The fourth proportional to 15,714.75, 21,686.37 and 9,430.77 is: 13,014.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,714.75 : 21,686.37 = 9,430.77 : x
  2. Step 2: Convert to fraction form
    15,714.75/21,686.37 = 9,430.77/x
  3. Step 3: Cross multiply
    15,714.75x = 21,686.37 × 9,430.77
  4. Step 4: Simplify right side
    15,714.75x = 204,519,167.60
  5. Step 5: Solve for x
    x = 204,519,167.60/15,714.75
  6. Step 6: Final answer
    x = 13,014.47

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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.