Home / 35,420.62-48,878.56-20,312.55

Finding the Fourth Proportional to 35,420.62, 48,878.56 and 20,312.55

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Solution

The fourth proportional to 35,420.62, 48,878.56 and 20,312.55 is: 28,030.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,420.62 : 48,878.56 = 20,312.55 : x
  2. Step 2: Convert to fraction form
    35,420.62/48,878.56 = 20,312.55/x
  3. Step 3: Cross multiply
    35,420.62x = 48,878.56 × 20,312.55
  4. Step 4: Simplify right side
    35,420.62x = 992,848,193.93
  5. Step 5: Solve for x
    x = 992,848,193.93/35,420.62
  6. Step 6: Final answer
    x = 28,030.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.