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Finding the Fourth Proportional to 30,624.40, 45,904.20 and 11,897.20

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Solution

The fourth proportional to 30,624.40, 45,904.20 and 11,897.20 is: 17,833.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,624.40 : 45,904.20 = 11,897.20 : x
  2. Step 2: Convert to fraction form
    30,624.40/45,904.20 = 11,897.20/x
  3. Step 3: Cross multiply
    30,624.40x = 45,904.20 × 11,897.20
  4. Step 4: Simplify right side
    30,624.40x = 546,131,448.24
  5. Step 5: Solve for x
    x = 546,131,448.24/30,624.40
  6. Step 6: Final answer
    x = 17,833.21

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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.