Home / 19,012.08-28,459.80-10,225.20

Finding the Fourth Proportional to 19,012.08, 28,459.80 and 10,225.20

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Solution

The fourth proportional to 19,012.08, 28,459.80 and 10,225.20 is: 15,306.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,012.08 : 28,459.80 = 10,225.20 : x
  2. Step 2: Convert to fraction form
    19,012.08/28,459.80 = 10,225.20/x
  3. Step 3: Cross multiply
    19,012.08x = 28,459.80 × 10,225.20
  4. Step 4: Simplify right side
    19,012.08x = 291,007,146.96
  5. Step 5: Solve for x
    x = 291,007,146.96/19,012.08
  6. Step 6: Final answer
    x = 15,306.43

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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.