Home / 20,807.61-28,714.51-11,376.18

Finding the Fourth Proportional to 20,807.61, 28,714.51 and 11,376.18

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Solution

The fourth proportional to 20,807.61, 28,714.51 and 11,376.18 is: 15,699.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.61 : 28,714.51 = 11,376.18 : x
  2. Step 2: Convert to fraction form
    20,807.61/28,714.51 = 11,376.18/x
  3. Step 3: Cross multiply
    20,807.61x = 28,714.51 × 11,376.18
  4. Step 4: Simplify right side
    20,807.61x = 326,661,434.37
  5. Step 5: Solve for x
    x = 326,661,434.37/20,807.61
  6. Step 6: Final answer
    x = 15,699.13

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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.