Home / 13,985.60-19,302.36-10,221.12

Finding the Fourth Proportional to 13,985.60, 19,302.36 and 10,221.12

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Solution

The fourth proportional to 13,985.60, 19,302.36 and 10,221.12 is: 14,106.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.60 : 19,302.36 = 10,221.12 : x
  2. Step 2: Convert to fraction form
    13,985.60/19,302.36 = 10,221.12/x
  3. Step 3: Cross multiply
    13,985.60x = 19,302.36 × 10,221.12
  4. Step 4: Simplify right side
    13,985.60x = 197,291,737.84
  5. Step 5: Solve for x
    x = 197,291,737.84/13,985.60
  6. Step 6: Final answer
    x = 14,106.78

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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.