Home / 29,259.81-40,378.25-15,830.77

Finding the Fourth Proportional to 29,259.81, 40,378.25 and 15,830.77

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Solution

The fourth proportional to 29,259.81, 40,378.25 and 15,830.77 is: 21,846.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,259.81 : 40,378.25 = 15,830.77 : x
  2. Step 2: Convert to fraction form
    29,259.81/40,378.25 = 15,830.77/x
  3. Step 3: Cross multiply
    29,259.81x = 40,378.25 × 15,830.77
  4. Step 4: Simplify right side
    29,259.81x = 639,218,600.48
  5. Step 5: Solve for x
    x = 639,218,600.48/29,259.81
  6. Step 6: Final answer
    x = 21,846.30

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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.