Home / 35,420.50-48,878.39-20,312.42

Finding the Fourth Proportional to 35,420.50, 48,878.39 and 20,312.42

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Solution

The fourth proportional to 35,420.50, 48,878.39 and 20,312.42 is: 28,030.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,420.50 : 48,878.39 = 20,312.42 : x
  2. Step 2: Convert to fraction form
    35,420.50/48,878.39 = 20,312.42/x
  3. Step 3: Cross multiply
    35,420.50x = 48,878.39 × 20,312.42
  4. Step 4: Simplify right side
    35,420.50x = 992,838,559.58
  5. Step 5: Solve for x
    x = 992,838,559.58/35,420.50
  6. Step 6: Final answer
    x = 28,030.06

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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.