Home / 20,875.86-28,810.68-11,924.70

Finding the Fourth Proportional to 20,875.86, 28,810.68 and 11,924.70

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Solution

The fourth proportional to 20,875.86, 28,810.68 and 11,924.70 is: 16,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.86 : 28,810.68 = 11,924.70 : x
  2. Step 2: Convert to fraction form
    20,875.86/28,810.68 = 11,924.70/x
  3. Step 3: Cross multiply
    20,875.86x = 28,810.68 × 11,924.70
  4. Step 4: Simplify right side
    20,875.86x = 343,558,715.80
  5. Step 5: Solve for x
    x = 343,558,715.80/20,875.86
  6. Step 6: Final answer
    x = 16,457.22

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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.