Home / 19,140.02-28,712.20-8,750.42

Finding the Fourth Proportional to 19,140.02, 28,712.20 and 8,750.42

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Solution

The fourth proportional to 19,140.02, 28,712.20 and 8,750.42 is: 13,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.02 : 28,712.20 = 8,750.42 : x
  2. Step 2: Convert to fraction form
    19,140.02/28,712.20 = 8,750.42/x
  3. Step 3: Cross multiply
    19,140.02x = 28,712.20 × 8,750.42
  4. Step 4: Simplify right side
    19,140.02x = 251,243,809.12
  5. Step 5: Solve for x
    x = 251,243,809.12/19,140.02
  6. Step 6: Final answer
    x = 13,126.62

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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.