Home / 18,687,319.80-28,030,979.70-13,648,471.80

Finding the Fourth Proportional to 18,687,319.80, 28,030,979.70 and 13,648,471.80

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Solution

The fourth proportional to 18,687,319.80, 28,030,979.70 and 13,648,471.80 is: 20,472,707.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,319.80 : 28,030,979.70 = 13,648,471.80 : x
  2. Step 2: Convert to fraction form
    18,687,319.80/28,030,979.70 = 13,648,471.80/x
  3. Step 3: Cross multiply
    18,687,319.80x = 28,030,979.70 × 13,648,471.80
  4. Step 4: Simplify right side
    18,687,319.80x = 382,580,035,961,822.50
  5. Step 5: Solve for x
    x = 382,580,035,961,822.50/18,687,319.80
  6. Step 6: Final answer
    x = 20,472,707.70

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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.