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Finding the Fourth Proportional to 30,981.72, 46,473.30 and 9,925.80

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Solution

The fourth proportional to 30,981.72, 46,473.30 and 9,925.80 is: 14,888.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.72 : 46,473.30 = 9,925.80 : x
  2. Step 2: Convert to fraction form
    30,981.72/46,473.30 = 9,925.80/x
  3. Step 3: Cross multiply
    30,981.72x = 46,473.30 × 9,925.80
  4. Step 4: Simplify right side
    30,981.72x = 461,284,681.14
  5. Step 5: Solve for x
    x = 461,284,681.14/30,981.72
  6. Step 6: Final answer
    x = 14,888.93

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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.