Home / 21,527,440.80-29,715,066-12,828,341.76

Finding the Fourth Proportional to 21,527,440.80, 29,715,066 and 12,828,341.76

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Solution

The fourth proportional to 21,527,440.80, 29,715,066 and 12,828,341.76 is: 17,707,400.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,527,440.80 : 29,715,066 = 12,828,341.76 : x
  2. Step 2: Convert to fraction form
    21,527,440.80/29,715,066 = 12,828,341.76/x
  3. Step 3: Cross multiply
    21,527,440.80x = 29,715,066 × 12,828,341.76
  4. Step 4: Simplify right side
    21,527,440.80x = 381,195,022,068,956.12
  5. Step 5: Solve for x
    x = 381,195,022,068,956.12/21,527,440.80
  6. Step 6: Final answer
    x = 17,707,400.78

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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.