Home / 15,957.49-23,921.35-5,420.30

Finding the Fourth Proportional to 15,957.49, 23,921.35 and 5,420.30

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Solution

The fourth proportional to 15,957.49, 23,921.35 and 5,420.30 is: 8,125.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,957.49 : 23,921.35 = 5,420.30 : x
  2. Step 2: Convert to fraction form
    15,957.49/23,921.35 = 5,420.30/x
  3. Step 3: Cross multiply
    15,957.49x = 23,921.35 × 5,420.30
  4. Step 4: Simplify right side
    15,957.49x = 129,660,894.81
  5. Step 5: Solve for x
    x = 129,660,894.81/15,957.49
  6. Step 6: Final answer
    x = 8,125.39

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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.