Home / 20,460.65-28,226.16-13,290.08

Finding the Fourth Proportional to 20,460.65, 28,226.16 and 13,290.08

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Solution

The fourth proportional to 20,460.65, 28,226.16 and 13,290.08 is: 18,334.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.65 : 28,226.16 = 13,290.08 : x
  2. Step 2: Convert to fraction form
    20,460.65/28,226.16 = 13,290.08/x
  3. Step 3: Cross multiply
    20,460.65x = 28,226.16 × 13,290.08
  4. Step 4: Simplify right side
    20,460.65x = 375,127,924.49
  5. Step 5: Solve for x
    x = 375,127,924.49/20,460.65
  6. Step 6: Final answer
    x = 18,334.12

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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.