Home / 14,685.12-20,250.14-8,715.63

Finding the Fourth Proportional to 14,685.12, 20,250.14 and 8,715.63

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Solution

The fourth proportional to 14,685.12, 20,250.14 and 8,715.63 is: 12,018.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,685.12 : 20,250.14 = 8,715.63 : x
  2. Step 2: Convert to fraction form
    14,685.12/20,250.14 = 8,715.63/x
  3. Step 3: Cross multiply
    14,685.12x = 20,250.14 × 8,715.63
  4. Step 4: Simplify right side
    14,685.12x = 176,492,727.69
  5. Step 5: Solve for x
    x = 176,492,727.69/14,685.12
  6. Step 6: Final answer
    x = 12,018.47

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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.