Home / 20,529.40-30,809.08-19,304.68

Finding the Fourth Proportional to 20,529.40, 30,809.08 and 19,304.68

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Solution

The fourth proportional to 20,529.40, 30,809.08 and 19,304.68 is: 28,971.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.40 : 30,809.08 = 19,304.68 : x
  2. Step 2: Convert to fraction form
    20,529.40/30,809.08 = 19,304.68/x
  3. Step 3: Cross multiply
    20,529.40x = 30,809.08 × 19,304.68
  4. Step 4: Simplify right side
    20,529.40x = 594,759,430.49
  5. Step 5: Solve for x
    x = 594,759,430.49/20,529.40
  6. Step 6: Final answer
    x = 28,971.11

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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.