Home / 20,988.48-28,965.32-12,035.91

Finding the Fourth Proportional to 20,988.48, 28,965.32 and 12,035.91

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Solution

The fourth proportional to 20,988.48, 28,965.32 and 12,035.91 is: 16,610.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.48 : 28,965.32 = 12,035.91 : x
  2. Step 2: Convert to fraction form
    20,988.48/28,965.32 = 12,035.91/x
  3. Step 3: Cross multiply
    20,988.48x = 28,965.32 × 12,035.91
  4. Step 4: Simplify right side
    20,988.48x = 348,623,924.46
  5. Step 5: Solve for x
    x = 348,623,924.46/20,988.48
  6. Step 6: Final answer
    x = 16,610.25

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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.