Home / 38,561,811.87-53,215,401.45-20,920,713.51

Finding the Fourth Proportional to 38,561,811.87, 53,215,401.45 and 20,920,713.51

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Solution

The fourth proportional to 38,561,811.87, 53,215,401.45 and 20,920,713.51 is: 28,870,639.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,561,811.87 : 53,215,401.45 = 20,920,713.51 : x
  2. Step 2: Convert to fraction form
    38,561,811.87/53,215,401.45 = 20,920,713.51/x
  3. Step 3: Cross multiply
    38,561,811.87x = 53,215,401.45 × 20,920,713.51
  4. Step 4: Simplify right side
    38,561,811.87x = 1,113,304,168,215,420
  5. Step 5: Solve for x
    x = 1,113,304,168,215,420/38,561,811.87
  6. Step 6: Final answer
    x = 28,870,639.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.