Home / 21,106.60-29,124.90-12,152.32

Finding the Fourth Proportional to 21,106.60, 29,124.90 and 12,152.32

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Solution

The fourth proportional to 21,106.60, 29,124.90 and 12,152.32 is: 16,768.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.60 : 29,124.90 = 12,152.32 : x
  2. Step 2: Convert to fraction form
    21,106.60/29,124.90 = 12,152.32/x
  3. Step 3: Cross multiply
    21,106.60x = 29,124.90 × 12,152.32
  4. Step 4: Simplify right side
    21,106.60x = 353,935,104.77
  5. Step 5: Solve for x
    x = 353,935,104.77/21,106.60
  6. Step 6: Final answer
    x = 16,768.93

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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.