Home / 15,303.88-21,115.46-9,335.16

Finding the Fourth Proportional to 15,303.88, 21,115.46 and 9,335.16

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Solution

The fourth proportional to 15,303.88, 21,115.46 and 9,335.16 is: 12,880.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,303.88 : 21,115.46 = 9,335.16 : x
  2. Step 2: Convert to fraction form
    15,303.88/21,115.46 = 9,335.16/x
  3. Step 3: Cross multiply
    15,303.88x = 21,115.46 × 9,335.16
  4. Step 4: Simplify right side
    15,303.88x = 197,116,197.57
  5. Step 5: Solve for x
    x = 197,116,197.57/15,303.88
  6. Step 6: Final answer
    x = 12,880.15

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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.