Home / 28,355,319.20-42,532,978.80-13,210,781.60

Finding the Fourth Proportional to 28,355,319.20, 42,532,978.80 and 13,210,781.60

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Solution

The fourth proportional to 28,355,319.20, 42,532,978.80 and 13,210,781.60 is: 19,816,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355,319.20 : 42,532,978.80 = 13,210,781.60 : x
  2. Step 2: Convert to fraction form
    28,355,319.20/42,532,978.80 = 13,210,781.60/x
  3. Step 3: Cross multiply
    28,355,319.20x = 42,532,978.80 × 13,210,781.60
  4. Step 4: Simplify right side
    28,355,319.20x = 561,893,893,724,230
  5. Step 5: Solve for x
    x = 561,893,893,724,230/28,355,319.20
  6. Step 6: Final answer
    x = 19,816,172.40

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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.