Home / 30,490.08-45,740.60-10,780.08

Finding the Fourth Proportional to 30,490.08, 45,740.60 and 10,780.08

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Solution

The fourth proportional to 30,490.08, 45,740.60 and 10,780.08 is: 16,172.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,490.08 : 45,740.60 = 10,780.08 : x
  2. Step 2: Convert to fraction form
    30,490.08/45,740.60 = 10,780.08/x
  3. Step 3: Cross multiply
    30,490.08x = 45,740.60 × 10,780.08
  4. Step 4: Simplify right side
    30,490.08x = 493,087,327.25
  5. Step 5: Solve for x
    x = 493,087,327.25/30,490.08
  6. Step 6: Final answer
    x = 16,172.06

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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.