Home / 15,813.76-23,740.80-12,897.76

Finding the Fourth Proportional to 15,813.76, 23,740.80 and 12,897.76

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Solution

The fourth proportional to 15,813.76, 23,740.80 and 12,897.76 is: 19,363.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.76 : 23,740.80 = 12,897.76 : x
  2. Step 2: Convert to fraction form
    15,813.76/23,740.80 = 12,897.76/x
  3. Step 3: Cross multiply
    15,813.76x = 23,740.80 × 12,897.76
  4. Step 4: Simplify right side
    15,813.76x = 306,203,140.61
  5. Step 5: Solve for x
    x = 306,203,140.61/15,813.76
  6. Step 6: Final answer
    x = 19,363.08

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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.