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Finding the Fourth Proportional to 29,430.99, 40,623.66 and 20,005.02

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Solution

The fourth proportional to 29,430.99, 40,623.66 and 20,005.02 is: 27,612.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,430.99 : 40,623.66 = 20,005.02 : x
  2. Step 2: Convert to fraction form
    29,430.99/40,623.66 = 20,005.02/x
  3. Step 3: Cross multiply
    29,430.99x = 40,623.66 × 20,005.02
  4. Step 4: Simplify right side
    29,430.99x = 812,677,130.77
  5. Step 5: Solve for x
    x = 812,677,130.77/29,430.99
  6. Step 6: Final answer
    x = 27,612.97

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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.