Home / 42,412.41-63,630.36-12,830.40

Finding the Fourth Proportional to 42,412.41, 63,630.36 and 12,830.40

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Solution

The fourth proportional to 42,412.41, 63,630.36 and 12,830.40 is: 19,249.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,412.41 : 63,630.36 = 12,830.40 : x
  2. Step 2: Convert to fraction form
    42,412.41/63,630.36 = 12,830.40/x
  3. Step 3: Cross multiply
    42,412.41x = 63,630.36 × 12,830.40
  4. Step 4: Simplify right side
    42,412.41x = 816,402,970.94
  5. Step 5: Solve for x
    x = 816,402,970.94/42,412.41
  6. Step 6: Final answer
    x = 19,249.15

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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.