Home / 28,075.84-38,744.40-15,500.68

Finding the Fourth Proportional to 28,075.84, 38,744.40 and 15,500.68

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Solution

The fourth proportional to 28,075.84, 38,744.40 and 15,500.68 is: 21,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.84 : 38,744.40 = 15,500.68 : x
  2. Step 2: Convert to fraction form
    28,075.84/38,744.40 = 15,500.68/x
  3. Step 3: Cross multiply
    28,075.84x = 38,744.40 × 15,500.68
  4. Step 4: Simplify right side
    28,075.84x = 600,564,546.19
  5. Step 5: Solve for x
    x = 600,564,546.19/28,075.84
  6. Step 6: Final answer
    x = 21,390.80

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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.