Home / 30,609.43-45,931.88-12,838.51

Finding the Fourth Proportional to 30,609.43, 45,931.88 and 12,838.51

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Solution

The fourth proportional to 30,609.43, 45,931.88 and 12,838.51 is: 19,265.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,609.43 : 45,931.88 = 12,838.51 : x
  2. Step 2: Convert to fraction form
    30,609.43/45,931.88 = 12,838.51/x
  3. Step 3: Cross multiply
    30,609.43x = 45,931.88 × 12,838.51
  4. Step 4: Simplify right side
    30,609.43x = 589,696,917.99
  5. Step 5: Solve for x
    x = 589,696,917.99/30,609.43
  6. Step 6: Final answer
    x = 19,265.20

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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.