Home / 15,586.95-21,504.65-8,870.90

Finding the Fourth Proportional to 15,586.95, 21,504.65 and 8,870.90

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Solution

The fourth proportional to 15,586.95, 21,504.65 and 8,870.90 is: 12,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,586.95 : 21,504.65 = 8,870.90 : x
  2. Step 2: Convert to fraction form
    15,586.95/21,504.65 = 8,870.90/x
  3. Step 3: Cross multiply
    15,586.95x = 21,504.65 × 8,870.90
  4. Step 4: Simplify right side
    15,586.95x = 190,765,514.34
  5. Step 5: Solve for x
    x = 190,765,514.34/15,586.95
  6. Step 6: Final answer
    x = 12,238.80

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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.