Home / 20,219,821.40-30,329,732.10-11,610,477.20

Finding the Fourth Proportional to 20,219,821.40, 30,329,732.10 and 11,610,477.20

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Solution

The fourth proportional to 20,219,821.40, 30,329,732.10 and 11,610,477.20 is: 17,415,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,821.40 : 30,329,732.10 = 11,610,477.20 : x
  2. Step 2: Convert to fraction form
    20,219,821.40/30,329,732.10 = 11,610,477.20/x
  3. Step 3: Cross multiply
    20,219,821.40x = 30,329,732.10 × 11,610,477.20
  4. Step 4: Simplify right side
    20,219,821.40x = 352,142,663,029,158.12
  5. Step 5: Solve for x
    x = 352,142,663,029,158.12/20,219,821.40
  6. Step 6: Final answer
    x = 17,415,715.80

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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.