Home / 19,621.31-27,090.43-15,075.88

Finding the Fourth Proportional to 19,621.31, 27,090.43 and 15,075.88

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Solution

The fourth proportional to 19,621.31, 27,090.43 and 15,075.88 is: 20,814.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,621.31 : 27,090.43 = 15,075.88 : x
  2. Step 2: Convert to fraction form
    19,621.31/27,090.43 = 15,075.88/x
  3. Step 3: Cross multiply
    19,621.31x = 27,090.43 × 15,075.88
  4. Step 4: Simplify right side
    19,621.31x = 408,411,966.41
  5. Step 5: Solve for x
    x = 408,411,966.41/19,621.31
  6. Step 6: Final answer
    x = 20,814.72

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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.