Home / 21,004.49-28,985.51-12,051.85

Finding the Fourth Proportional to 21,004.49, 28,985.51 and 12,051.85

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Solution

The fourth proportional to 21,004.49, 28,985.51 and 12,051.85 is: 16,631.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.49 : 28,985.51 = 12,051.85 : x
  2. Step 2: Convert to fraction form
    21,004.49/28,985.51 = 12,051.85/x
  3. Step 3: Cross multiply
    21,004.49x = 28,985.51 × 12,051.85
  4. Step 4: Simplify right side
    21,004.49x = 349,329,018.69
  5. Step 5: Solve for x
    x = 349,329,018.69/21,004.49
  6. Step 6: Final answer
    x = 16,631.16

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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.