Home / 15,845.80-21,810.18-14,938.60

Finding the Fourth Proportional to 15,845.80, 21,810.18 and 14,938.60

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Solution

The fourth proportional to 15,845.80, 21,810.18 and 14,938.60 is: 20,561.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,845.80 : 21,810.18 = 14,938.60 : x
  2. Step 2: Convert to fraction form
    15,845.80/21,810.18 = 14,938.60/x
  3. Step 3: Cross multiply
    15,845.80x = 21,810.18 × 14,938.60
  4. Step 4: Simplify right side
    15,845.80x = 325,813,554.95
  5. Step 5: Solve for x
    x = 325,813,554.95/15,845.80
  6. Step 6: Final answer
    x = 20,561.51

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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.