Home / 15,075.90-20,815.04-9,419.26

Finding the Fourth Proportional to 15,075.90, 20,815.04 and 9,419.26

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Solution

The fourth proportional to 15,075.90, 20,815.04 and 9,419.26 is: 13,005.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.90 : 20,815.04 = 9,419.26 : x
  2. Step 2: Convert to fraction form
    15,075.90/20,815.04 = 9,419.26/x
  3. Step 3: Cross multiply
    15,075.90x = 20,815.04 × 9,419.26
  4. Step 4: Simplify right side
    15,075.90x = 196,062,273.67
  5. Step 5: Solve for x
    x = 196,062,273.67/15,075.90
  6. Step 6: Final answer
    x = 13,005.01

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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.