Home / 15,552.09-21,461.94-8,478.90

Finding the Fourth Proportional to 15,552.09, 21,461.94 and 8,478.90

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Solution

The fourth proportional to 15,552.09, 21,461.94 and 8,478.90 is: 11,700.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552.09 : 21,461.94 = 8,478.90 : x
  2. Step 2: Convert to fraction form
    15,552.09/21,461.94 = 8,478.90/x
  3. Step 3: Cross multiply
    15,552.09x = 21,461.94 × 8,478.90
  4. Step 4: Simplify right side
    15,552.09x = 181,973,643.07
  5. Step 5: Solve for x
    x = 181,973,643.07/15,552.09
  6. Step 6: Final answer
    x = 11,700.91

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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.