Home / 21,995.15-30,352.93-12,434.87

Finding the Fourth Proportional to 21,995.15, 30,352.93 and 12,434.87

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Solution

The fourth proportional to 21,995.15, 30,352.93 and 12,434.87 is: 17,159.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.15 : 30,352.93 = 12,434.87 : x
  2. Step 2: Convert to fraction form
    21,995.15/30,352.93 = 12,434.87/x
  3. Step 3: Cross multiply
    21,995.15x = 30,352.93 × 12,434.87
  4. Step 4: Simplify right side
    21,995.15x = 377,434,783.46
  5. Step 5: Solve for x
    x = 377,434,783.46/21,995.15
  6. Step 6: Final answer
    x = 17,159.91

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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.