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Finding the Fourth Proportional to 18,648.95, 28,075.51 and 17,015.99

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Solution

The fourth proportional to 18,648.95, 28,075.51 and 17,015.99 is: 25,617.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,648.95 : 28,075.51 = 17,015.99 : x
  2. Step 2: Convert to fraction form
    18,648.95/28,075.51 = 17,015.99/x
  3. Step 3: Cross multiply
    18,648.95x = 28,075.51 × 17,015.99
  4. Step 4: Simplify right side
    18,648.95x = 477,732,597.40
  5. Step 5: Solve for x
    x = 477,732,597.40/18,648.95
  6. Step 6: Final answer
    x = 25,617.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.