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Finding the Fourth Proportional to 30,683.80, 46,025.70 and 9,909.40

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Solution

The fourth proportional to 30,683.80, 46,025.70 and 9,909.40 is: 14,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,683.80 : 46,025.70 = 9,909.40 : x
  2. Step 2: Convert to fraction form
    30,683.80/46,025.70 = 9,909.40/x
  3. Step 3: Cross multiply
    30,683.80x = 46,025.70 × 9,909.40
  4. Step 4: Simplify right side
    30,683.80x = 456,087,071.58
  5. Step 5: Solve for x
    x = 456,087,071.58/30,683.80
  6. Step 6: Final answer
    x = 14,864.10

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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.