Home / 21,601.81-32,329.53-13,287.10

Finding the Fourth Proportional to 21,601.81, 32,329.53 and 13,287.10

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Solution

The fourth proportional to 21,601.81, 32,329.53 and 13,287.10 is: 19,885.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,601.81 : 32,329.53 = 13,287.10 : x
  2. Step 2: Convert to fraction form
    21,601.81/32,329.53 = 13,287.10/x
  3. Step 3: Cross multiply
    21,601.81x = 32,329.53 × 13,287.10
  4. Step 4: Simplify right side
    21,601.81x = 429,565,698.06
  5. Step 5: Solve for x
    x = 429,565,698.06/21,601.81
  6. Step 6: Final answer
    x = 19,885.63

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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.