Home / 30,704.03-42,365.61-19,389.04

Finding the Fourth Proportional to 30,704.03, 42,365.61 and 19,389.04

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Solution

The fourth proportional to 30,704.03, 42,365.61 and 19,389.04 is: 26,753.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,704.03 : 42,365.61 = 19,389.04 : x
  2. Step 2: Convert to fraction form
    30,704.03/42,365.61 = 19,389.04/x
  3. Step 3: Cross multiply
    30,704.03x = 42,365.61 × 19,389.04
  4. Step 4: Simplify right side
    30,704.03x = 821,428,301.79
  5. Step 5: Solve for x
    x = 821,428,301.79/30,704.03
  6. Step 6: Final answer
    x = 26,753.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.