Home / 15,287.02-21,087.12-9,612.77

Finding the Fourth Proportional to 15,287.02, 21,087.12 and 9,612.77

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Solution

The fourth proportional to 15,287.02, 21,087.12 and 9,612.77 is: 13,259.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.02 : 21,087.12 = 9,612.77 : x
  2. Step 2: Convert to fraction form
    15,287.02/21,087.12 = 9,612.77/x
  3. Step 3: Cross multiply
    15,287.02x = 21,087.12 × 9,612.77
  4. Step 4: Simplify right side
    15,287.02x = 202,705,634.52
  5. Step 5: Solve for x
    x = 202,705,634.52/15,287.02
  6. Step 6: Final answer
    x = 13,259.98

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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.