Home / 15,449.47-21,319.40-9,075.07

Finding the Fourth Proportional to 15,449.47, 21,319.40 and 9,075.07

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Solution

The fourth proportional to 15,449.47, 21,319.40 and 9,075.07 is: 12,523.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.47 : 21,319.40 = 9,075.07 : x
  2. Step 2: Convert to fraction form
    15,449.47/21,319.40 = 9,075.07/x
  3. Step 3: Cross multiply
    15,449.47x = 21,319.40 × 9,075.07
  4. Step 4: Simplify right side
    15,449.47x = 193,475,096.69
  5. Step 5: Solve for x
    x = 193,475,096.69/15,449.47
  6. Step 6: Final answer
    x = 12,523.09

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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.