Home / 20,315.84-30,485.40-10,955.82

Finding the Fourth Proportional to 20,315.84, 30,485.40 and 10,955.82

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Solution

The fourth proportional to 20,315.84, 30,485.40 and 10,955.82 is: 16,440.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.84 : 30,485.40 = 10,955.82 : x
  2. Step 2: Convert to fraction form
    20,315.84/30,485.40 = 10,955.82/x
  3. Step 3: Cross multiply
    20,315.84x = 30,485.40 × 10,955.82
  4. Step 4: Simplify right side
    20,315.84x = 333,992,402.60
  5. Step 5: Solve for x
    x = 333,992,402.60/20,315.84
  6. Step 6: Final answer
    x = 16,440.00

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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.