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Finding the Fourth Proportional to 30,398.04, 45,603.54 and 9,621.72

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Solution

The fourth proportional to 30,398.04, 45,603.54 and 9,621.72 is: 14,434.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,398.04 : 45,603.54 = 9,621.72 : x
  2. Step 2: Convert to fraction form
    30,398.04/45,603.54 = 9,621.72/x
  3. Step 3: Cross multiply
    30,398.04x = 45,603.54 × 9,621.72
  4. Step 4: Simplify right side
    30,398.04x = 438,784,492.89
  5. Step 5: Solve for x
    x = 438,784,492.89/30,398.04
  6. Step 6: Final answer
    x = 14,434.63

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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.