Home / 30,285.40-45,408.66-12,750.52

Finding the Fourth Proportional to 30,285.40, 45,408.66 and 12,750.52

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Solution

The fourth proportional to 30,285.40, 45,408.66 and 12,750.52 is: 19,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285.40 : 45,408.66 = 12,750.52 : x
  2. Step 2: Convert to fraction form
    30,285.40/45,408.66 = 12,750.52/x
  3. Step 3: Cross multiply
    30,285.40x = 45,408.66 × 12,750.52
  4. Step 4: Simplify right side
    30,285.40x = 578,984,027.50
  5. Step 5: Solve for x
    x = 578,984,027.50/30,285.40
  6. Step 6: Final answer
    x = 19,117.60

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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.