Home / 28,113.84-42,209.64-14,272.56

Finding the Fourth Proportional to 28,113.84, 42,209.64 and 14,272.56

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Solution

The fourth proportional to 28,113.84, 42,209.64 and 14,272.56 is: 21,428.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.84 : 42,209.64 = 14,272.56 : x
  2. Step 2: Convert to fraction form
    28,113.84/42,209.64 = 14,272.56/x
  3. Step 3: Cross multiply
    28,113.84x = 42,209.64 × 14,272.56
  4. Step 4: Simplify right side
    28,113.84x = 602,439,619.48
  5. Step 5: Solve for x
    x = 602,439,619.48/28,113.84
  6. Step 6: Final answer
    x = 21,428.58

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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.