Home / 18,687,412.80-28,038,992.40-10,173,859.20

Finding the Fourth Proportional to 18,687,412.80, 28,038,992.40 and 10,173,859.20

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Solution

The fourth proportional to 18,687,412.80, 28,038,992.40 and 10,173,859.20 is: 15,265,075.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,412.80 : 28,038,992.40 = 10,173,859.20 : x
  2. Step 2: Convert to fraction form
    18,687,412.80/28,038,992.40 = 10,173,859.20/x
  3. Step 3: Cross multiply
    18,687,412.80x = 28,038,992.40 × 10,173,859.20
  4. Step 4: Simplify right side
    18,687,412.80x = 285,264,760,787,470.06
  5. Step 5: Solve for x
    x = 285,264,760,787,470.06/18,687,412.80
  6. Step 6: Final answer
    x = 15,265,075.15

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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.