Home / 30,440.91-42,035.18-19,130.00

Finding the Fourth Proportional to 30,440.91, 42,035.18 and 19,130.00

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Solution

The fourth proportional to 30,440.91, 42,035.18 and 19,130.00 is: 26,416.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.91 : 42,035.18 = 19,130.00 : x
  2. Step 2: Convert to fraction form
    30,440.91/42,035.18 = 19,130.00/x
  3. Step 3: Cross multiply
    30,440.91x = 42,035.18 × 19,130.00
  4. Step 4: Simplify right side
    30,440.91x = 804,133,002.84
  5. Step 5: Solve for x
    x = 804,133,002.84/30,440.91
  6. Step 6: Final answer
    x = 26,416.19

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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.