Home / 30,288.60-45,384.30-19,888.20

Finding the Fourth Proportional to 30,288.60, 45,384.30 and 19,888.20

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Solution

The fourth proportional to 30,288.60, 45,384.30 and 19,888.20 is: 29,800.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,288.60 : 45,384.30 = 19,888.20 : x
  2. Step 2: Convert to fraction form
    30,288.60/45,384.30 = 19,888.20/x
  3. Step 3: Cross multiply
    30,288.60x = 45,384.30 × 19,888.20
  4. Step 4: Simplify right side
    30,288.60x = 902,612,035.26
  5. Step 5: Solve for x
    x = 902,612,035.26/30,288.60
  6. Step 6: Final answer
    x = 29,800.39

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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.