Home / 42,412.32-63,602.64-12,821.28

Finding the Fourth Proportional to 42,412.32, 63,602.64 and 12,821.28

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Solution

The fourth proportional to 42,412.32, 63,602.64 and 12,821.28 is: 19,227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,412.32 : 63,602.64 = 12,821.28 : x
  2. Step 2: Convert to fraction form
    42,412.32/63,602.64 = 12,821.28/x
  3. Step 3: Cross multiply
    42,412.32x = 63,602.64 × 12,821.28
  4. Step 4: Simplify right side
    42,412.32x = 815,467,256.18
  5. Step 5: Solve for x
    x = 815,467,256.18/42,412.32
  6. Step 6: Final answer
    x = 19,227.13

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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.