Home / 20,921,570.60-31,382,355.90-7,453,538.60

Finding the Fourth Proportional to 20,921,570.60, 31,382,355.90 and 7,453,538.60

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Solution

The fourth proportional to 20,921,570.60, 31,382,355.90 and 7,453,538.60 is: 11,180,307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,921,570.60 : 31,382,355.90 = 7,453,538.60 : x
  2. Step 2: Convert to fraction form
    20,921,570.60/31,382,355.90 = 7,453,538.60/x
  3. Step 3: Cross multiply
    20,921,570.60x = 31,382,355.90 × 7,453,538.60
  4. Step 4: Simplify right side
    20,921,570.60x = 233,909,601,059,587.72
  5. Step 5: Solve for x
    x = 233,909,601,059,587.72/20,921,570.60
  6. Step 6: Final answer
    x = 11,180,307.90

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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.