Home / 21,980.20-32,970.30-10,316.20

Finding the Fourth Proportional to 21,980.20, 32,970.30 and 10,316.20

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Solution

The fourth proportional to 21,980.20, 32,970.30 and 10,316.20 is: 15,474.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980.20 : 32,970.30 = 10,316.20 : x
  2. Step 2: Convert to fraction form
    21,980.20/32,970.30 = 10,316.20/x
  3. Step 3: Cross multiply
    21,980.20x = 32,970.30 × 10,316.20
  4. Step 4: Simplify right side
    21,980.20x = 340,128,208.86
  5. Step 5: Solve for x
    x = 340,128,208.86/21,980.20
  6. Step 6: Final answer
    x = 15,474.30

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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.