Home / 20,646.77-28,492.55-11,215.34

Finding the Fourth Proportional to 20,646.77, 28,492.55 and 11,215.34

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Solution

The fourth proportional to 20,646.77, 28,492.55 and 11,215.34 is: 15,477.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.77 : 28,492.55 = 11,215.34 : x
  2. Step 2: Convert to fraction form
    20,646.77/28,492.55 = 11,215.34/x
  3. Step 3: Cross multiply
    20,646.77x = 28,492.55 × 11,215.34
  4. Step 4: Simplify right side
    20,646.77x = 319,553,635.72
  5. Step 5: Solve for x
    x = 319,553,635.72/20,646.77
  6. Step 6: Final answer
    x = 15,477.17

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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.