Home / 21,237.84-31,823.55-13,430.25

Finding the Fourth Proportional to 21,237.84, 31,823.55 and 13,430.25

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Solution

The fourth proportional to 21,237.84, 31,823.55 and 13,430.25 is: 20,124.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.84 : 31,823.55 = 13,430.25 : x
  2. Step 2: Convert to fraction form
    21,237.84/31,823.55 = 13,430.25/x
  3. Step 3: Cross multiply
    21,237.84x = 31,823.55 × 13,430.25
  4. Step 4: Simplify right side
    21,237.84x = 427,398,232.39
  5. Step 5: Solve for x
    x = 427,398,232.39/21,237.84
  6. Step 6: Final answer
    x = 20,124.37

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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.