Home / 21,885.77-32,776.05-12,497.35

Finding the Fourth Proportional to 21,885.77, 32,776.05 and 12,497.35

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Solution

The fourth proportional to 21,885.77, 32,776.05 and 12,497.35 is: 18,715.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.77 : 32,776.05 = 12,497.35 : x
  2. Step 2: Convert to fraction form
    21,885.77/32,776.05 = 12,497.35/x
  3. Step 3: Cross multiply
    21,885.77x = 32,776.05 × 12,497.35
  4. Step 4: Simplify right side
    21,885.77x = 409,613,768.47
  5. Step 5: Solve for x
    x = 409,613,768.47/21,885.77
  6. Step 6: Final answer
    x = 18,715.99

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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.