Home / 20,740,828.40-31,111,242.60-13,173,225.20

Finding the Fourth Proportional to 20,740,828.40, 31,111,242.60 and 13,173,225.20

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Solution

The fourth proportional to 20,740,828.40, 31,111,242.60 and 13,173,225.20 is: 19,759,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740,828.40 : 31,111,242.60 = 13,173,225.20 : x
  2. Step 2: Convert to fraction form
    20,740,828.40/31,111,242.60 = 13,173,225.20/x
  3. Step 3: Cross multiply
    20,740,828.40x = 31,111,242.60 × 13,173,225.20
  4. Step 4: Simplify right side
    20,740,828.40x = 409,835,405,021,633.50
  5. Step 5: Solve for x
    x = 409,835,405,021,633.50/20,740,828.40
  6. Step 6: Final answer
    x = 19,759,837.80

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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.