Home / 28,219.86-42,330.06-7,443.36

Finding the Fourth Proportional to 28,219.86, 42,330.06 and 7,443.36

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Solution

The fourth proportional to 28,219.86, 42,330.06 and 7,443.36 is: 11,165.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.86 : 42,330.06 = 7,443.36 : x
  2. Step 2: Convert to fraction form
    28,219.86/42,330.06 = 7,443.36/x
  3. Step 3: Cross multiply
    28,219.86x = 42,330.06 × 7,443.36
  4. Step 4: Simplify right side
    28,219.86x = 315,077,875.40
  5. Step 5: Solve for x
    x = 315,077,875.40/28,219.86
  6. Step 6: Final answer
    x = 11,165.11

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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.