Home / 15,630.83-21,569.72-8,555.88

Finding the Fourth Proportional to 15,630.83, 21,569.72 and 8,555.88

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Solution

The fourth proportional to 15,630.83, 21,569.72 and 8,555.88 is: 11,806.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630.83 : 21,569.72 = 8,555.88 : x
  2. Step 2: Convert to fraction form
    15,630.83/21,569.72 = 8,555.88/x
  3. Step 3: Cross multiply
    15,630.83x = 21,569.72 × 8,555.88
  4. Step 4: Simplify right side
    15,630.83x = 184,547,935.95
  5. Step 5: Solve for x
    x = 184,547,935.95/15,630.83
  6. Step 6: Final answer
    x = 11,806.66

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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.