Home / 20,607.79-28,438.95-12,110.10

Finding the Fourth Proportional to 20,607.79, 28,438.95 and 12,110.10

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Solution

The fourth proportional to 20,607.79, 28,438.95 and 12,110.10 is: 16,712.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.79 : 28,438.95 = 12,110.10 : x
  2. Step 2: Convert to fraction form
    20,607.79/28,438.95 = 12,110.10/x
  3. Step 3: Cross multiply
    20,607.79x = 28,438.95 × 12,110.10
  4. Step 4: Simplify right side
    20,607.79x = 344,398,559.01
  5. Step 5: Solve for x
    x = 344,398,559.01/20,607.79
  6. Step 6: Final answer
    x = 16,712.06

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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.