Home / 19,430.79-29,138.89-6,279.63

Finding the Fourth Proportional to 19,430.79, 29,138.89 and 6,279.63

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Solution

The fourth proportional to 19,430.79, 29,138.89 and 6,279.63 is: 9,417.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,430.79 : 29,138.89 = 6,279.63 : x
  2. Step 2: Convert to fraction form
    19,430.79/29,138.89 = 6,279.63/x
  3. Step 3: Cross multiply
    19,430.79x = 29,138.89 × 6,279.63
  4. Step 4: Simplify right side
    19,430.79x = 182,981,447.81
  5. Step 5: Solve for x
    x = 182,981,447.81/19,430.79
  6. Step 6: Final answer
    x = 9,417.09

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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.