Home / 14,140.60-21,210.90-10,860.10

Finding the Fourth Proportional to 14,140.60, 21,210.90 and 10,860.10

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Solution

The fourth proportional to 14,140.60, 21,210.90 and 10,860.10 is: 16,290.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.60 : 21,210.90 = 10,860.10 : x
  2. Step 2: Convert to fraction form
    14,140.60/21,210.90 = 10,860.10/x
  3. Step 3: Cross multiply
    14,140.60x = 21,210.90 × 10,860.10
  4. Step 4: Simplify right side
    14,140.60x = 230,352,495.09
  5. Step 5: Solve for x
    x = 230,352,495.09/14,140.60
  6. Step 6: Final answer
    x = 16,290.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.