Home / 31,512,801.72-43,523,538.60-21,181,588.68

Finding the Fourth Proportional to 31,512,801.72, 43,523,538.60 and 21,181,588.68

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Solution

The fourth proportional to 31,512,801.72, 43,523,538.60 and 21,181,588.68 is: 29,254,704.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,512,801.72 : 43,523,538.60 = 21,181,588.68 : x
  2. Step 2: Convert to fraction form
    31,512,801.72/43,523,538.60 = 21,181,588.68/x
  3. Step 3: Cross multiply
    31,512,801.72x = 43,523,538.60 × 21,181,588.68
  4. Step 4: Simplify right side
    31,512,801.72x = 921,897,692,523,303.12
  5. Step 5: Solve for x
    x = 921,897,692,523,303.12/31,512,801.72
  6. Step 6: Final answer
    x = 29,254,704.19

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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.