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Finding the Fourth Proportional to 15,075.03, 20,804.81 and 8,787.81

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Solution

The fourth proportional to 15,075.03, 20,804.81 and 8,787.81 is: 12,127.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.03 : 20,804.81 = 8,787.81 : x
  2. Step 2: Convert to fraction form
    15,075.03/20,804.81 = 8,787.81/x
  3. Step 3: Cross multiply
    15,075.03x = 20,804.81 × 8,787.81
  4. Step 4: Simplify right side
    15,075.03x = 182,828,673.43
  5. Step 5: Solve for x
    x = 182,828,673.43/15,075.03
  6. Step 6: Final answer
    x = 12,127.91

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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.