Home / 15,681.12-21,636.48-9,304.56

Finding the Fourth Proportional to 15,681.12, 21,636.48 and 9,304.56

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Solution

The fourth proportional to 15,681.12, 21,636.48 and 9,304.56 is: 12,838.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,681.12 : 21,636.48 = 9,304.56 : x
  2. Step 2: Convert to fraction form
    15,681.12/21,636.48 = 9,304.56/x
  3. Step 3: Cross multiply
    15,681.12x = 21,636.48 × 9,304.56
  4. Step 4: Simplify right side
    15,681.12x = 201,317,926.35
  5. Step 5: Solve for x
    x = 201,317,926.35/15,681.12
  6. Step 6: Final answer
    x = 12,838.24

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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.