Home / 28,085.10-42,139.90-14,922.06

Finding the Fourth Proportional to 28,085.10, 42,139.90 and 14,922.06

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Solution

The fourth proportional to 28,085.10, 42,139.90 and 14,922.06 is: 22,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.10 : 42,139.90 = 14,922.06 : x
  2. Step 2: Convert to fraction form
    28,085.10/42,139.90 = 14,922.06/x
  3. Step 3: Cross multiply
    28,085.10x = 42,139.90 × 14,922.06
  4. Step 4: Simplify right side
    28,085.10x = 628,814,134.85
  5. Step 5: Solve for x
    x = 628,814,134.85/28,085.10
  6. Step 6: Final answer
    x = 22,389.60

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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.