Home / 28,618.56-42,937.56-13,829.58

Finding the Fourth Proportional to 28,618.56, 42,937.56 and 13,829.58

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Solution

The fourth proportional to 28,618.56, 42,937.56 and 13,829.58 is: 20,749.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,618.56 : 42,937.56 = 13,829.58 : x
  2. Step 2: Convert to fraction form
    28,618.56/42,937.56 = 13,829.58/x
  3. Step 3: Cross multiply
    28,618.56x = 42,937.56 × 13,829.58
  4. Step 4: Simplify right side
    28,618.56x = 593,808,421.02
  5. Step 5: Solve for x
    x = 593,808,421.02/28,618.56
  6. Step 6: Final answer
    x = 20,749.07

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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.