Home / 15,840.49-21,858.39-9,465.81

Finding the Fourth Proportional to 15,840.49, 21,858.39 and 9,465.81

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Solution

The fourth proportional to 15,840.49, 21,858.39 and 9,465.81 is: 13,061.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.49 : 21,858.39 = 9,465.81 : x
  2. Step 2: Convert to fraction form
    15,840.49/21,858.39 = 9,465.81/x
  3. Step 3: Cross multiply
    15,840.49x = 21,858.39 × 9,465.81
  4. Step 4: Simplify right side
    15,840.49x = 206,907,407.63
  5. Step 5: Solve for x
    x = 206,907,407.63/15,840.49
  6. Step 6: Final answer
    x = 13,061.94

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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.