Home / 20,697,526.76-28,355,713.10-19,921,782.87

Finding the Fourth Proportional to 20,697,526.76, 28,355,713.10 and 19,921,782.87

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Solution

The fourth proportional to 20,697,526.76, 28,355,713.10 and 19,921,782.87 is: 27,292,940.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697,526.76 : 28,355,713.10 = 19,921,782.87 : x
  2. Step 2: Convert to fraction form
    20,697,526.76/28,355,713.10 = 19,921,782.87/x
  3. Step 3: Cross multiply
    20,697,526.76x = 28,355,713.10 × 19,921,782.87
  4. Step 4: Simplify right side
    20,697,526.76x = 564,896,359,477,312.38
  5. Step 5: Solve for x
    x = 564,896,359,477,312.38/20,697,526.76
  6. Step 6: Final answer
    x = 27,292,940.17

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.