Home / 15,552.16-21,460.80-8,478.40

Finding the Fourth Proportional to 15,552.16, 21,460.80 and 8,478.40

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Solution

The fourth proportional to 15,552.16, 21,460.80 and 8,478.40 is: 11,699.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552.16 : 21,460.80 = 8,478.40 : x
  2. Step 2: Convert to fraction form
    15,552.16/21,460.80 = 8,478.40/x
  3. Step 3: Cross multiply
    15,552.16x = 21,460.80 × 8,478.40
  4. Step 4: Simplify right side
    15,552.16x = 181,953,246.72
  5. Step 5: Solve for x
    x = 181,953,246.72/15,552.16
  6. Step 6: Final answer
    x = 11,699.55

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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.