Home / 20,636.40-28,450.02-14,175.84

Finding the Fourth Proportional to 20,636.40, 28,450.02 and 14,175.84

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Solution

The fourth proportional to 20,636.40, 28,450.02 and 14,175.84 is: 19,543.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.40 : 28,450.02 = 14,175.84 : x
  2. Step 2: Convert to fraction form
    20,636.40/28,450.02 = 14,175.84/x
  3. Step 3: Cross multiply
    20,636.40x = 28,450.02 × 14,175.84
  4. Step 4: Simplify right side
    20,636.40x = 403,302,931.52
  5. Step 5: Solve for x
    x = 403,302,931.52/20,636.40
  6. Step 6: Final answer
    x = 19,543.28

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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.