Home / 28,339.02-39,107.88-15,763.50

Finding the Fourth Proportional to 28,339.02, 39,107.88 and 15,763.50

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Solution

The fourth proportional to 28,339.02, 39,107.88 and 15,763.50 is: 21,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.02 : 39,107.88 = 15,763.50 : x
  2. Step 2: Convert to fraction form
    28,339.02/39,107.88 = 15,763.50/x
  3. Step 3: Cross multiply
    28,339.02x = 39,107.88 × 15,763.50
  4. Step 4: Simplify right side
    28,339.02x = 616,477,066.38
  5. Step 5: Solve for x
    x = 616,477,066.38/28,339.02
  6. Step 6: Final answer
    x = 21,753.65

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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.