Home / 28,506.77-39,339.08-15,760.28

Finding the Fourth Proportional to 28,506.77, 39,339.08 and 15,760.28

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Solution

The fourth proportional to 28,506.77, 39,339.08 and 15,760.28 is: 21,749.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,506.77 : 39,339.08 = 15,760.28 : x
  2. Step 2: Convert to fraction form
    28,506.77/39,339.08 = 15,760.28/x
  3. Step 3: Cross multiply
    28,506.77x = 39,339.08 × 15,760.28
  4. Step 4: Simplify right side
    28,506.77x = 619,994,915.74
  5. Step 5: Solve for x
    x = 619,994,915.74/28,506.77
  6. Step 6: Final answer
    x = 21,749.04

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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.