Home / 28,280.19-39,024.93-15,530.89

Finding the Fourth Proportional to 28,280.19, 39,024.93 and 15,530.89

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Solution

The fourth proportional to 28,280.19, 39,024.93 and 15,530.89 is: 21,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.19 : 39,024.93 = 15,530.89 : x
  2. Step 2: Convert to fraction form
    28,280.19/39,024.93 = 15,530.89/x
  3. Step 3: Cross multiply
    28,280.19x = 39,024.93 × 15,530.89
  4. Step 4: Simplify right side
    28,280.19x = 606,091,797.53
  5. Step 5: Solve for x
    x = 606,091,797.53/28,280.19
  6. Step 6: Final answer
    x = 21,431.68

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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.