Home / 30,312.86-45,441.16-15,489.09

Finding the Fourth Proportional to 30,312.86, 45,441.16 and 15,489.09

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Solution

The fourth proportional to 30,312.86, 45,441.16 and 15,489.09 is: 23,219.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,312.86 : 45,441.16 = 15,489.09 : x
  2. Step 2: Convert to fraction form
    30,312.86/45,441.16 = 15,489.09/x
  3. Step 3: Cross multiply
    30,312.86x = 45,441.16 × 15,489.09
  4. Step 4: Simplify right side
    30,312.86x = 703,842,178.22
  5. Step 5: Solve for x
    x = 703,842,178.22/30,312.86
  6. Step 6: Final answer
    x = 23,219.26

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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.