Home / 28,722,243.36-39,636,824.40-15,669,462.72

Finding the Fourth Proportional to 28,722,243.36, 39,636,824.40 and 15,669,462.72

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Solution

The fourth proportional to 28,722,243.36, 39,636,824.40 and 15,669,462.72 is: 21,623,928.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722,243.36 : 39,636,824.40 = 15,669,462.72 : x
  2. Step 2: Convert to fraction form
    28,722,243.36/39,636,824.40 = 15,669,462.72/x
  3. Step 3: Cross multiply
    28,722,243.36x = 39,636,824.40 × 15,669,462.72
  4. Step 4: Simplify right side
    28,722,243.36x = 621,087,742,274,986.38
  5. Step 5: Solve for x
    x = 621,087,742,274,986.38/28,722,243.36
  6. Step 6: Final answer
    x = 21,623,928.69

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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.