Home / 15,356.02-21,189.37-8,981.35

Finding the Fourth Proportional to 15,356.02, 21,189.37 and 8,981.35

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Solution

The fourth proportional to 15,356.02, 21,189.37 and 8,981.35 is: 12,393.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.02 : 21,189.37 = 8,981.35 : x
  2. Step 2: Convert to fraction form
    15,356.02/21,189.37 = 8,981.35/x
  3. Step 3: Cross multiply
    15,356.02x = 21,189.37 × 8,981.35
  4. Step 4: Simplify right side
    15,356.02x = 190,309,148.25
  5. Step 5: Solve for x
    x = 190,309,148.25/15,356.02
  6. Step 6: Final answer
    x = 12,393.13

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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.