Home / 20,590.14-28,419.48-13,526.13

Finding the Fourth Proportional to 20,590.14, 28,419.48 and 13,526.13

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Solution

The fourth proportional to 20,590.14, 28,419.48 and 13,526.13 is: 18,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.14 : 28,419.48 = 13,526.13 : x
  2. Step 2: Convert to fraction form
    20,590.14/28,419.48 = 13,526.13/x
  3. Step 3: Cross multiply
    20,590.14x = 28,419.48 × 13,526.13
  4. Step 4: Simplify right side
    20,590.14x = 384,405,581.01
  5. Step 5: Solve for x
    x = 384,405,581.01/20,590.14
  6. Step 6: Final answer
    x = 18,669.40

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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.