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Finding the Fourth Proportional to 29,040.80, 43,565.06 and 9,312.80

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Solution

The fourth proportional to 29,040.80, 43,565.06 and 9,312.80 is: 13,970.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,040.80 : 43,565.06 = 9,312.80 : x
  2. Step 2: Convert to fraction form
    29,040.80/43,565.06 = 9,312.80/x
  3. Step 3: Cross multiply
    29,040.80x = 43,565.06 × 9,312.80
  4. Step 4: Simplify right side
    29,040.80x = 405,712,690.77
  5. Step 5: Solve for x
    x = 405,712,690.77/29,040.80
  6. Step 6: Final answer
    x = 13,970.44

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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.