Home / 30,444.48-42,018.30-19,115.64

Finding the Fourth Proportional to 30,444.48, 42,018.30 and 19,115.64

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Solution

The fourth proportional to 30,444.48, 42,018.30 and 19,115.64 is: 26,382.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,444.48 : 42,018.30 = 19,115.64 : x
  2. Step 2: Convert to fraction form
    30,444.48/42,018.30 = 19,115.64/x
  3. Step 3: Cross multiply
    30,444.48x = 42,018.30 × 19,115.64
  4. Step 4: Simplify right side
    30,444.48x = 803,206,696.21
  5. Step 5: Solve for x
    x = 803,206,696.21/30,444.48
  6. Step 6: Final answer
    x = 26,382.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.