Home / 30,209.70-45,314.55-19,712.10

Finding the Fourth Proportional to 30,209.70, 45,314.55 and 19,712.10

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Solution

The fourth proportional to 30,209.70, 45,314.55 and 19,712.10 is: 29,568.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,209.70 : 45,314.55 = 19,712.10 : x
  2. Step 2: Convert to fraction form
    30,209.70/45,314.55 = 19,712.10/x
  3. Step 3: Cross multiply
    30,209.70x = 45,314.55 × 19,712.10
  4. Step 4: Simplify right side
    30,209.70x = 893,244,941.06
  5. Step 5: Solve for x
    x = 893,244,941.06/30,209.70
  6. Step 6: Final answer
    x = 29,568.15

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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.