Home / 14,289.48-21,432.60-4,428.81

Finding the Fourth Proportional to 14,289.48, 21,432.60 and 4,428.81

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Solution

The fourth proportional to 14,289.48, 21,432.60 and 4,428.81 is: 6,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.48 : 21,432.60 = 4,428.81 : x
  2. Step 2: Convert to fraction form
    14,289.48/21,432.60 = 4,428.81/x
  3. Step 3: Cross multiply
    14,289.48x = 21,432.60 × 4,428.81
  4. Step 4: Simplify right side
    14,289.48x = 94,920,913.21
  5. Step 5: Solve for x
    x = 94,920,913.21/14,289.48
  6. Step 6: Final answer
    x = 6,642.71

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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.