Home / 21,005.04-28,985.76-12,051.68

Finding the Fourth Proportional to 21,005.04, 28,985.76 and 12,051.68

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Solution

The fourth proportional to 21,005.04, 28,985.76 and 12,051.68 is: 16,630.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005.04 : 28,985.76 = 12,051.68 : x
  2. Step 2: Convert to fraction form
    21,005.04/28,985.76 = 12,051.68/x
  3. Step 3: Cross multiply
    21,005.04x = 28,985.76 × 12,051.68
  4. Step 4: Simplify right side
    21,005.04x = 349,327,104.08
  5. Step 5: Solve for x
    x = 349,327,104.08/21,005.04
  6. Step 6: Final answer
    x = 16,630.63

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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.