Home / 21,860.40-32,798.88-13,101.60

Finding the Fourth Proportional to 21,860.40, 32,798.88 and 13,101.60

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Solution

The fourth proportional to 21,860.40, 32,798.88 and 13,101.60 is: 19,657.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.40 : 32,798.88 = 13,101.60 : x
  2. Step 2: Convert to fraction form
    21,860.40/32,798.88 = 13,101.60/x
  3. Step 3: Cross multiply
    21,860.40x = 32,798.88 × 13,101.60
  4. Step 4: Simplify right side
    21,860.40x = 429,717,806.21
  5. Step 5: Solve for x
    x = 429,717,806.21/21,860.40
  6. Step 6: Final answer
    x = 19,657.36

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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.