Home / 15,416.36-21,275.53-8,699.53

Finding the Fourth Proportional to 15,416.36, 21,275.53 and 8,699.53

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Solution

The fourth proportional to 15,416.36, 21,275.53 and 8,699.53 is: 12,005.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,416.36 : 21,275.53 = 8,699.53 : x
  2. Step 2: Convert to fraction form
    15,416.36/21,275.53 = 8,699.53/x
  3. Step 3: Cross multiply
    15,416.36x = 21,275.53 × 8,699.53
  4. Step 4: Simplify right side
    15,416.36x = 185,087,116.35
  5. Step 5: Solve for x
    x = 185,087,116.35/15,416.36
  6. Step 6: Final answer
    x = 12,005.89

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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.