Home / 21,931.76-30,265.08-12,503.36

Finding the Fourth Proportional to 21,931.76, 30,265.08 and 12,503.36

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Solution

The fourth proportional to 21,931.76, 30,265.08 and 12,503.36 is: 17,254.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.76 : 30,265.08 = 12,503.36 : x
  2. Step 2: Convert to fraction form
    21,931.76/30,265.08 = 12,503.36/x
  3. Step 3: Cross multiply
    21,931.76x = 30,265.08 × 12,503.36
  4. Step 4: Simplify right side
    21,931.76x = 378,415,190.67
  5. Step 5: Solve for x
    x = 378,415,190.67/21,931.76
  6. Step 6: Final answer
    x = 17,254.21

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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.