Home / 15,328.49-21,153.89-9,362.84

Finding the Fourth Proportional to 15,328.49, 21,153.89 and 9,362.84

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Solution

The fourth proportional to 15,328.49, 21,153.89 and 9,362.84 is: 12,921.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.49 : 21,153.89 = 9,362.84 : x
  2. Step 2: Convert to fraction form
    15,328.49/21,153.89 = 9,362.84/x
  3. Step 3: Cross multiply
    15,328.49x = 21,153.89 × 9,362.84
  4. Step 4: Simplify right side
    15,328.49x = 198,060,405.09
  5. Step 5: Solve for x
    x = 198,060,405.09/15,328.49
  6. Step 6: Final answer
    x = 12,921.07

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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.