Home / 28,143.06-42,172.88-11,482.98

Finding the Fourth Proportional to 28,143.06, 42,172.88 and 11,482.98

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Solution

The fourth proportional to 28,143.06, 42,172.88 and 11,482.98 is: 17,207.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.06 : 42,172.88 = 11,482.98 : x
  2. Step 2: Convert to fraction form
    28,143.06/42,172.88 = 11,482.98/x
  3. Step 3: Cross multiply
    28,143.06x = 42,172.88 × 11,482.98
  4. Step 4: Simplify right side
    28,143.06x = 484,270,280.17
  5. Step 5: Solve for x
    x = 484,270,280.17/28,143.06
  6. Step 6: Final answer
    x = 17,207.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.