Home / 28,346,477.20-39,097,253.72-21,377,448.45

Finding the Fourth Proportional to 28,346,477.20, 39,097,253.72 and 21,377,448.45

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Solution

The fourth proportional to 28,346,477.20, 39,097,253.72 and 21,377,448.45 is: 29,485,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,346,477.20 : 39,097,253.72 = 21,377,448.45 : x
  2. Step 2: Convert to fraction form
    28,346,477.20/39,097,253.72 = 21,377,448.45/x
  3. Step 3: Cross multiply
    28,346,477.20x = 39,097,253.72 × 21,377,448.45
  4. Step 4: Simplify right side
    28,346,477.20x = 835,799,525,682,368.88
  5. Step 5: Solve for x
    x = 835,799,525,682,368.88/28,346,477.20
  6. Step 6: Final answer
    x = 29,485,128.60

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Double scale
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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.