Home / 28,540.04-42,817.95-11,907.90

Finding the Fourth Proportional to 28,540.04, 42,817.95 and 11,907.90

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Solution

The fourth proportional to 28,540.04, 42,817.95 and 11,907.90 is: 17,865.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540.04 : 42,817.95 = 11,907.90 : x
  2. Step 2: Convert to fraction form
    28,540.04/42,817.95 = 11,907.90/x
  3. Step 3: Cross multiply
    28,540.04x = 42,817.95 × 11,907.90
  4. Step 4: Simplify right side
    28,540.04x = 509,871,866.81
  5. Step 5: Solve for x
    x = 509,871,866.81/28,540.04
  6. Step 6: Final answer
    x = 17,865.15

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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.