Home / 28,305,877.60-42,458,816.40-12,139,573.60

Finding the Fourth Proportional to 28,305,877.60, 42,458,816.40 and 12,139,573.60

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Solution

The fourth proportional to 28,305,877.60, 42,458,816.40 and 12,139,573.60 is: 18,209,360.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305,877.60 : 42,458,816.40 = 12,139,573.60 : x
  2. Step 2: Convert to fraction form
    28,305,877.60/42,458,816.40 = 12,139,573.60/x
  3. Step 3: Cross multiply
    28,305,877.60x = 42,458,816.40 × 12,139,573.60
  4. Step 4: Simplify right side
    28,305,877.60x = 515,431,926,656,687
  5. Step 5: Solve for x
    x = 515,431,926,656,687/28,305,877.60
  6. Step 6: Final answer
    x = 18,209,360.40

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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.