Home / 28,075.95-38,744.60-15,328.71

Finding the Fourth Proportional to 28,075.95, 38,744.60 and 15,328.71

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Solution

The fourth proportional to 28,075.95, 38,744.60 and 15,328.71 is: 21,153.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.95 : 38,744.60 = 15,328.71 : x
  2. Step 2: Convert to fraction form
    28,075.95/38,744.60 = 15,328.71/x
  3. Step 3: Cross multiply
    28,075.95x = 38,744.60 × 15,328.71
  4. Step 4: Simplify right side
    28,075.95x = 593,904,660.82
  5. Step 5: Solve for x
    x = 593,904,660.82/28,075.95
  6. Step 6: Final answer
    x = 21,153.50

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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.