Home / 28,190,781.20-42,290,837.40-12,024,477.20

Finding the Fourth Proportional to 28,190,781.20, 42,290,837.40 and 12,024,477.20

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Solution

The fourth proportional to 28,190,781.20, 42,290,837.40 and 12,024,477.20 is: 18,038,705.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190,781.20 : 42,290,837.40 = 12,024,477.20 : x
  2. Step 2: Convert to fraction form
    28,190,781.20/42,290,837.40 = 12,024,477.20/x
  3. Step 3: Cross multiply
    28,190,781.20x = 42,290,837.40 × 12,024,477.20
  4. Step 4: Simplify right side
    28,190,781.20x = 508,525,210,085,207.25
  5. Step 5: Solve for x
    x = 508,525,210,085,207.25/28,190,781.20
  6. Step 6: Final answer
    x = 18,038,705.86

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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.