Home / 28,303.59-42,455.76-12,289.44

Finding the Fourth Proportional to 28,303.59, 42,455.76 and 12,289.44

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Solution

The fourth proportional to 28,303.59, 42,455.76 and 12,289.44 is: 18,434.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,303.59 : 42,455.76 = 12,289.44 : x
  2. Step 2: Convert to fraction form
    28,303.59/42,455.76 = 12,289.44/x
  3. Step 3: Cross multiply
    28,303.59x = 42,455.76 × 12,289.44
  4. Step 4: Simplify right side
    28,303.59x = 521,757,515.17
  5. Step 5: Solve for x
    x = 521,757,515.17/28,303.59
  6. Step 6: Final answer
    x = 18,434.32

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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.