Home / 21,590.40-29,788.56-14,877.84

Finding the Fourth Proportional to 21,590.40, 29,788.56 and 14,877.84

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Solution

The fourth proportional to 21,590.40, 29,788.56 and 14,877.84 is: 20,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,590.40 : 29,788.56 = 14,877.84 : x
  2. Step 2: Convert to fraction form
    21,590.40/29,788.56 = 14,877.84/x
  3. Step 3: Cross multiply
    21,590.40x = 29,788.56 × 14,877.84
  4. Step 4: Simplify right side
    21,590.40x = 443,189,429.51
  5. Step 5: Solve for x
    x = 443,189,429.51/21,590.40
  6. Step 6: Final answer
    x = 20,527.15

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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.