Home / 19,057.20-28,617.48-12,857.10

Finding the Fourth Proportional to 19,057.20, 28,617.48 and 12,857.10

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Solution

The fourth proportional to 19,057.20, 28,617.48 and 12,857.10 is: 19,307.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,057.20 : 28,617.48 = 12,857.10 : x
  2. Step 2: Convert to fraction form
    19,057.20/28,617.48 = 12,857.10/x
  3. Step 3: Cross multiply
    19,057.20x = 28,617.48 × 12,857.10
  4. Step 4: Simplify right side
    19,057.20x = 367,937,802.11
  5. Step 5: Solve for x
    x = 367,937,802.11/19,057.20
  6. Step 6: Final answer
    x = 19,307.02

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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.