Home / 15,389.32-21,247.14-9,654.64

Finding the Fourth Proportional to 15,389.32, 21,247.14 and 9,654.64

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Solution

The fourth proportional to 15,389.32, 21,247.14 and 9,654.64 is: 13,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.32 : 21,247.14 = 9,654.64 : x
  2. Step 2: Convert to fraction form
    15,389.32/21,247.14 = 9,654.64/x
  3. Step 3: Cross multiply
    15,389.32x = 21,247.14 × 9,654.64
  4. Step 4: Simplify right side
    15,389.32x = 205,133,405.63
  5. Step 5: Solve for x
    x = 205,133,405.63/15,389.32
  6. Step 6: Final answer
    x = 13,329.60

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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.