Home / 15,648.16-21,594.55-8,478.19

Finding the Fourth Proportional to 15,648.16, 21,594.55 and 8,478.19

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Solution

The fourth proportional to 15,648.16, 21,594.55 and 8,478.19 is: 11,699.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,648.16 : 21,594.55 = 8,478.19 : x
  2. Step 2: Convert to fraction form
    15,648.16/21,594.55 = 8,478.19/x
  3. Step 3: Cross multiply
    15,648.16x = 21,594.55 × 8,478.19
  4. Step 4: Simplify right side
    15,648.16x = 183,082,780.29
  5. Step 5: Solve for x
    x = 183,082,780.29/15,648.16
  6. Step 6: Final answer
    x = 11,699.95

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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.