Home / 21,513.48-32,154.88-19,400.28

Finding the Fourth Proportional to 21,513.48, 32,154.88 and 19,400.28

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Solution

The fourth proportional to 21,513.48, 32,154.88 and 19,400.28 is: 28,996.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,513.48 : 32,154.88 = 19,400.28 : x
  2. Step 2: Convert to fraction form
    21,513.48/32,154.88 = 19,400.28/x
  3. Step 3: Cross multiply
    21,513.48x = 32,154.88 × 19,400.28
  4. Step 4: Simplify right side
    21,513.48x = 623,813,675.37
  5. Step 5: Solve for x
    x = 623,813,675.37/21,513.48
  6. Step 6: Final answer
    x = 28,996.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.