Home / 28,212,070.72-38,929,933.92-15,822,673.60

Finding the Fourth Proportional to 28,212,070.72, 38,929,933.92 and 15,822,673.60

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Solution

The fourth proportional to 28,212,070.72, 38,929,933.92 and 15,822,673.60 is: 21,833,762.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212,070.72 : 38,929,933.92 = 15,822,673.60 : x
  2. Step 2: Convert to fraction form
    28,212,070.72/38,929,933.92 = 15,822,673.60/x
  3. Step 3: Cross multiply
    28,212,070.72x = 38,929,933.92 × 15,822,673.60
  4. Step 4: Simplify right side
    28,212,070.72x = 615,975,637,685,728.50
  5. Step 5: Solve for x
    x = 615,975,637,685,728.50/28,212,070.72
  6. Step 6: Final answer
    x = 21,833,762.00

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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.