Home / 15,829.21-21,848.63-9,857.35

Finding the Fourth Proportional to 15,829.21, 21,848.63 and 9,857.35

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Solution

The fourth proportional to 15,829.21, 21,848.63 and 9,857.35 is: 13,605.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,829.21 : 21,848.63 = 9,857.35 : x
  2. Step 2: Convert to fraction form
    15,829.21/21,848.63 = 9,857.35/x
  3. Step 3: Cross multiply
    15,829.21x = 21,848.63 × 9,857.35
  4. Step 4: Simplify right side
    15,829.21x = 215,369,489.02
  5. Step 5: Solve for x
    x = 215,369,489.02/15,829.21
  6. Step 6: Final answer
    x = 13,605.83

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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.