Home / 28,506.84-42,734.26-10,989.72

Finding the Fourth Proportional to 28,506.84, 42,734.26 and 10,989.72

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Solution

The fourth proportional to 28,506.84, 42,734.26 and 10,989.72 is: 16,474.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,506.84 : 42,734.26 = 10,989.72 : x
  2. Step 2: Convert to fraction form
    28,506.84/42,734.26 = 10,989.72/x
  3. Step 3: Cross multiply
    28,506.84x = 42,734.26 × 10,989.72
  4. Step 4: Simplify right side
    28,506.84x = 469,637,551.81
  5. Step 5: Solve for x
    x = 469,637,551.81/28,506.84
  6. Step 6: Final answer
    x = 16,474.56

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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.