Home / 20,418,153.02-28,145,144.73-13,880,432.27

Finding the Fourth Proportional to 20,418,153.02, 28,145,144.73 and 13,880,432.27

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Solution

The fourth proportional to 20,418,153.02, 28,145,144.73 and 13,880,432.27 is: 19,133,306.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418,153.02 : 28,145,144.73 = 13,880,432.27 : x
  2. Step 2: Convert to fraction form
    20,418,153.02/28,145,144.73 = 13,880,432.27/x
  3. Step 3: Cross multiply
    20,418,153.02x = 28,145,144.73 × 13,880,432.27
  4. Step 4: Simplify right side
    20,418,153.02x = 390,666,775,154,112.44
  5. Step 5: Solve for x
    x = 390,666,775,154,112.44/20,418,153.02
  6. Step 6: Final answer
    x = 19,133,306.27

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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.