Home / 20,119.60-30,060.30-19,430.56

Finding the Fourth Proportional to 20,119.60, 30,060.30 and 19,430.56

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Solution

The fourth proportional to 20,119.60, 30,060.30 and 19,430.56 is: 29,030.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.60 : 30,060.30 = 19,430.56 : x
  2. Step 2: Convert to fraction form
    20,119.60/30,060.30 = 19,430.56/x
  3. Step 3: Cross multiply
    20,119.60x = 30,060.30 × 19,430.56
  4. Step 4: Simplify right side
    20,119.60x = 584,088,462.77
  5. Step 5: Solve for x
    x = 584,088,462.77/20,119.60
  6. Step 6: Final answer
    x = 29,030.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.