Home / 21,845.95-32,715.86-12,457.64

Finding the Fourth Proportional to 21,845.95, 32,715.86 and 12,457.64

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Solution

The fourth proportional to 21,845.95, 32,715.86 and 12,457.64 is: 18,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.95 : 32,715.86 = 12,457.64 : x
  2. Step 2: Convert to fraction form
    21,845.95/32,715.86 = 12,457.64/x
  3. Step 3: Cross multiply
    21,845.95x = 32,715.86 × 12,457.64
  4. Step 4: Simplify right side
    21,845.95x = 407,562,406.17
  5. Step 5: Solve for x
    x = 407,562,406.17/21,845.95
  6. Step 6: Final answer
    x = 18,656.20

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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.