Home / 20,689,866.45-28,552,901.40-11,522,509.20

Finding the Fourth Proportional to 20,689,866.45, 28,552,901.40 and 11,522,509.20

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Solution

The fourth proportional to 20,689,866.45, 28,552,901.40 and 11,522,509.20 is: 15,901,555.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,866.45 : 28,552,901.40 = 11,522,509.20 : x
  2. Step 2: Convert to fraction form
    20,689,866.45/28,552,901.40 = 11,522,509.20/x
  3. Step 3: Cross multiply
    20,689,866.45x = 28,552,901.40 × 11,522,509.20
  4. Step 4: Simplify right side
    20,689,866.45x = 329,001,069,068,192.81
  5. Step 5: Solve for x
    x = 329,001,069,068,192.81/20,689,866.45
  6. Step 6: Final answer
    x = 15,901,555.96

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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.