Home / 21,006.04-28,985.70-12,052.30

Finding the Fourth Proportional to 21,006.04, 28,985.70 and 12,052.30

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Solution

The fourth proportional to 21,006.04, 28,985.70 and 12,052.30 is: 16,630.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.04 : 28,985.70 = 12,052.30 : x
  2. Step 2: Convert to fraction form
    21,006.04/28,985.70 = 12,052.30/x
  3. Step 3: Cross multiply
    21,006.04x = 28,985.70 × 12,052.30
  4. Step 4: Simplify right side
    21,006.04x = 349,344,352.11
  5. Step 5: Solve for x
    x = 349,344,352.11/21,006.04
  6. Step 6: Final answer
    x = 16,630.66

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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.