Home / 21,236.40-31,854.60-5,655.60

Finding the Fourth Proportional to 21,236.40, 31,854.60 and 5,655.60

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Solution

The fourth proportional to 21,236.40, 31,854.60 and 5,655.60 is: 8,483.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.40 : 31,854.60 = 5,655.60 : x
  2. Step 2: Convert to fraction form
    21,236.40/31,854.60 = 5,655.60/x
  3. Step 3: Cross multiply
    21,236.40x = 31,854.60 × 5,655.60
  4. Step 4: Simplify right side
    21,236.40x = 180,156,875.76
  5. Step 5: Solve for x
    x = 180,156,875.76/21,236.40
  6. Step 6: Final answer
    x = 8,483.40

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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.