Home / 35,980.20-53,970.30-12,603.60

Finding the Fourth Proportional to 35,980.20, 53,970.30 and 12,603.60

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Solution

The fourth proportional to 35,980.20, 53,970.30 and 12,603.60 is: 18,905.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,980.20 : 53,970.30 = 12,603.60 : x
  2. Step 2: Convert to fraction form
    35,980.20/53,970.30 = 12,603.60/x
  3. Step 3: Cross multiply
    35,980.20x = 53,970.30 × 12,603.60
  4. Step 4: Simplify right side
    35,980.20x = 680,220,073.08
  5. Step 5: Solve for x
    x = 680,220,073.08/35,980.20
  6. Step 6: Final answer
    x = 18,905.40

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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.