Home / 30,436.48-45,646.80-12,897.28

Finding the Fourth Proportional to 30,436.48, 45,646.80 and 12,897.28

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Solution

The fourth proportional to 30,436.48, 45,646.80 and 12,897.28 is: 19,342.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,436.48 : 45,646.80 = 12,897.28 : x
  2. Step 2: Convert to fraction form
    30,436.48/45,646.80 = 12,897.28/x
  3. Step 3: Cross multiply
    30,436.48x = 45,646.80 × 12,897.28
  4. Step 4: Simplify right side
    30,436.48x = 588,719,560.70
  5. Step 5: Solve for x
    x = 588,719,560.70/30,436.48
  6. Step 6: Final answer
    x = 19,342.56

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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.