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Finding the Fourth Proportional to 29,686.59, 40,947.80 and 19,089.63

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Solution

The fourth proportional to 29,686.59, 40,947.80 and 19,089.63 is: 26,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,686.59 : 40,947.80 = 19,089.63 : x
  2. Step 2: Convert to fraction form
    29,686.59/40,947.80 = 19,089.63/x
  3. Step 3: Cross multiply
    29,686.59x = 40,947.80 × 19,089.63
  4. Step 4: Simplify right side
    29,686.59x = 781,678,255.87
  5. Step 5: Solve for x
    x = 781,678,255.87/29,686.59
  6. Step 6: Final answer
    x = 26,331.02

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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.