Home / 28,210.93-38,929.28-15,461.86

Finding the Fourth Proportional to 28,210.93, 38,929.28 and 15,461.86

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Solution

The fourth proportional to 28,210.93, 38,929.28 and 15,461.86 is: 21,336.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.93 : 38,929.28 = 15,461.86 : x
  2. Step 2: Convert to fraction form
    28,210.93/38,929.28 = 15,461.86/x
  3. Step 3: Cross multiply
    28,210.93x = 38,929.28 × 15,461.86
  4. Step 4: Simplify right side
    28,210.93x = 601,919,077.26
  5. Step 5: Solve for x
    x = 601,919,077.26/28,210.93
  6. Step 6: Final answer
    x = 21,336.38

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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.