Home / 15,538.58-21,447.93-11,075.28

Finding the Fourth Proportional to 15,538.58, 21,447.93 and 11,075.28

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Solution

The fourth proportional to 15,538.58, 21,447.93 and 11,075.28 is: 15,287.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.58 : 21,447.93 = 11,075.28 : x
  2. Step 2: Convert to fraction form
    15,538.58/21,447.93 = 11,075.28/x
  3. Step 3: Cross multiply
    15,538.58x = 21,447.93 × 11,075.28
  4. Step 4: Simplify right side
    15,538.58x = 237,541,830.17
  5. Step 5: Solve for x
    x = 237,541,830.17/15,538.58
  6. Step 6: Final answer
    x = 15,287.23

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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.