Home / 21,084.60-31,655.70-10,703.64

Finding the Fourth Proportional to 21,084.60, 31,655.70 and 10,703.64

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Solution

The fourth proportional to 21,084.60, 31,655.70 and 10,703.64 is: 16,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.60 : 31,655.70 = 10,703.64 : x
  2. Step 2: Convert to fraction form
    21,084.60/31,655.70 = 10,703.64/x
  3. Step 3: Cross multiply
    21,084.60x = 31,655.70 × 10,703.64
  4. Step 4: Simplify right side
    21,084.60x = 338,831,216.75
  5. Step 5: Solve for x
    x = 338,831,216.75/21,084.60
  6. Step 6: Final answer
    x = 16,070.08

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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.