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Finding the Fourth Proportional to 30,254.40, 45,430.20 and 21,992.40

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Solution

The fourth proportional to 30,254.40, 45,430.20 and 21,992.40 is: 33,023.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,254.40 : 45,430.20 = 21,992.40 : x
  2. Step 2: Convert to fraction form
    30,254.40/45,430.20 = 21,992.40/x
  3. Step 3: Cross multiply
    30,254.40x = 45,430.20 × 21,992.40
  4. Step 4: Simplify right side
    30,254.40x = 999,119,130.48
  5. Step 5: Solve for x
    x = 999,119,130.48/30,254.40
  6. Step 6: Final answer
    x = 33,023.93

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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.