Home / 15,496.65-21,385.15-8,782.16

Finding the Fourth Proportional to 15,496.65, 21,385.15 and 8,782.16

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Solution

The fourth proportional to 15,496.65, 21,385.15 and 8,782.16 is: 12,119.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.65 : 21,385.15 = 8,782.16 : x
  2. Step 2: Convert to fraction form
    15,496.65/21,385.15 = 8,782.16/x
  3. Step 3: Cross multiply
    15,496.65x = 21,385.15 × 8,782.16
  4. Step 4: Simplify right side
    15,496.65x = 187,807,680.04
  5. Step 5: Solve for x
    x = 187,807,680.04/15,496.65
  6. Step 6: Final answer
    x = 12,119.24

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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.