Home / 28,008.04-42,018.70-8,017.80

Finding the Fourth Proportional to 28,008.04, 42,018.70 and 8,017.80

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Solution

The fourth proportional to 28,008.04, 42,018.70 and 8,017.80 is: 12,028.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.04 : 42,018.70 = 8,017.80 : x
  2. Step 2: Convert to fraction form
    28,008.04/42,018.70 = 8,017.80/x
  3. Step 3: Cross multiply
    28,008.04x = 42,018.70 × 8,017.80
  4. Step 4: Simplify right side
    28,008.04x = 336,897,532.86
  5. Step 5: Solve for x
    x = 336,897,532.86/28,008.04
  6. Step 6: Final answer
    x = 12,028.60

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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.