Home / 28,353.64-42,515.86-12,762.76

Finding the Fourth Proportional to 28,353.64, 42,515.86 and 12,762.76

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Solution

The fourth proportional to 28,353.64, 42,515.86 and 12,762.76 is: 19,137.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.64 : 42,515.86 = 12,762.76 : x
  2. Step 2: Convert to fraction form
    28,353.64/42,515.86 = 12,762.76/x
  3. Step 3: Cross multiply
    28,353.64x = 42,515.86 × 12,762.76
  4. Step 4: Simplify right side
    28,353.64x = 542,619,717.37
  5. Step 5: Solve for x
    x = 542,619,717.37/28,353.64
  6. Step 6: Final answer
    x = 19,137.57

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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.