Home / 42,383.09-63,578.16-21,312.29

Finding the Fourth Proportional to 42,383.09, 63,578.16 and 21,312.29

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Solution

The fourth proportional to 42,383.09, 63,578.16 and 21,312.29 is: 31,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,383.09 : 63,578.16 = 21,312.29 : x
  2. Step 2: Convert to fraction form
    42,383.09/63,578.16 = 21,312.29/x
  3. Step 3: Cross multiply
    42,383.09x = 63,578.16 × 21,312.29
  4. Step 4: Simplify right side
    42,383.09x = 1,354,995,865.70
  5. Step 5: Solve for x
    x = 1,354,995,865.70/42,383.09
  6. Step 6: Final answer
    x = 31,970.20

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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.