Home / 20,648.84-28,501.02-12,153.68

Finding the Fourth Proportional to 20,648.84, 28,501.02 and 12,153.68

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Solution

The fourth proportional to 20,648.84, 28,501.02 and 12,153.68 is: 16,775.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.84 : 28,501.02 = 12,153.68 : x
  2. Step 2: Convert to fraction form
    20,648.84/28,501.02 = 12,153.68/x
  3. Step 3: Cross multiply
    20,648.84x = 28,501.02 × 12,153.68
  4. Step 4: Simplify right side
    20,648.84x = 346,392,276.75
  5. Step 5: Solve for x
    x = 346,392,276.75/20,648.84
  6. Step 6: Final answer
    x = 16,775.39

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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.