Home / 20,577.32-28,397.22-12,623.94

Finding the Fourth Proportional to 20,577.32, 28,397.22 and 12,623.94

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Solution

The fourth proportional to 20,577.32, 28,397.22 and 12,623.94 is: 17,421.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.32 : 28,397.22 = 12,623.94 : x
  2. Step 2: Convert to fraction form
    20,577.32/28,397.22 = 12,623.94/x
  3. Step 3: Cross multiply
    20,577.32x = 28,397.22 × 12,623.94
  4. Step 4: Simplify right side
    20,577.32x = 358,484,801.45
  5. Step 5: Solve for x
    x = 358,484,801.45/20,577.32
  6. Step 6: Final answer
    x = 17,421.36

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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.