Home / 15,619.80-21,549.26-9,953.52

Finding the Fourth Proportional to 15,619.80, 21,549.26 and 9,953.52

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Solution

The fourth proportional to 15,619.80, 21,549.26 and 9,953.52 is: 13,731.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,619.80 : 21,549.26 = 9,953.52 : x
  2. Step 2: Convert to fraction form
    15,619.80/21,549.26 = 9,953.52/x
  3. Step 3: Cross multiply
    15,619.80x = 21,549.26 × 9,953.52
  4. Step 4: Simplify right side
    15,619.80x = 214,490,990.40
  5. Step 5: Solve for x
    x = 214,490,990.40/15,619.80
  6. Step 6: Final answer
    x = 13,731.99

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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.