Home / 20,798.19-28,693.35-12,826.59

Finding the Fourth Proportional to 20,798.19, 28,693.35 and 12,826.59

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Solution

The fourth proportional to 20,798.19, 28,693.35 and 12,826.59 is: 17,695.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.19 : 28,693.35 = 12,826.59 : x
  2. Step 2: Convert to fraction form
    20,798.19/28,693.35 = 12,826.59/x
  3. Step 3: Cross multiply
    20,798.19x = 28,693.35 × 12,826.59
  4. Step 4: Simplify right side
    20,798.19x = 368,037,836.18
  5. Step 5: Solve for x
    x = 368,037,836.18/20,798.19
  6. Step 6: Final answer
    x = 17,695.67

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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.