Home / 21,471.40-29,631.18-12,037.60

Finding the Fourth Proportional to 21,471.40, 29,631.18 and 12,037.60

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Solution

The fourth proportional to 21,471.40, 29,631.18 and 12,037.60 is: 16,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,471.40 : 29,631.18 = 12,037.60 : x
  2. Step 2: Convert to fraction form
    21,471.40/29,631.18 = 12,037.60/x
  3. Step 3: Cross multiply
    21,471.40x = 29,631.18 × 12,037.60
  4. Step 4: Simplify right side
    21,471.40x = 356,688,292.37
  5. Step 5: Solve for x
    x = 356,688,292.37/21,471.40
  6. Step 6: Final answer
    x = 16,612.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.