Home / 15,298.88-21,111.16-8,583.60

Finding the Fourth Proportional to 15,298.88, 21,111.16 and 8,583.60

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Solution

The fourth proportional to 15,298.88, 21,111.16 and 8,583.60 is: 11,844.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,298.88 : 21,111.16 = 8,583.60 : x
  2. Step 2: Convert to fraction form
    15,298.88/21,111.16 = 8,583.60/x
  3. Step 3: Cross multiply
    15,298.88x = 21,111.16 × 8,583.60
  4. Step 4: Simplify right side
    15,298.88x = 181,209,752.98
  5. Step 5: Solve for x
    x = 181,209,752.98/15,298.88
  6. Step 6: Final answer
    x = 11,844.64

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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.