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Finding the Fourth Proportional to 30,405.51, 45,607.95 and 9,629.01

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Solution

The fourth proportional to 30,405.51, 45,607.95 and 9,629.01 is: 14,443.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,405.51 : 45,607.95 = 9,629.01 : x
  2. Step 2: Convert to fraction form
    30,405.51/45,607.95 = 9,629.01/x
  3. Step 3: Cross multiply
    30,405.51x = 45,607.95 × 9,629.01
  4. Step 4: Simplify right side
    30,405.51x = 439,159,406.63
  5. Step 5: Solve for x
    x = 439,159,406.63/30,405.51
  6. Step 6: Final answer
    x = 14,443.42

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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.