Home / 28,814.10-39,763.95-15,894.86

Finding the Fourth Proportional to 28,814.10, 39,763.95 and 15,894.86

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Solution

The fourth proportional to 28,814.10, 39,763.95 and 15,894.86 is: 21,935.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,814.10 : 39,763.95 = 15,894.86 : x
  2. Step 2: Convert to fraction form
    28,814.10/39,763.95 = 15,894.86/x
  3. Step 3: Cross multiply
    28,814.10x = 39,763.95 × 15,894.86
  4. Step 4: Simplify right side
    28,814.10x = 632,042,140.00
  5. Step 5: Solve for x
    x = 632,042,140.00/28,814.10
  6. Step 6: Final answer
    x = 21,935.17

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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.