Home / 15,502.04-21,393.69-8,428.31

Finding the Fourth Proportional to 15,502.04, 21,393.69 and 8,428.31

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Solution

The fourth proportional to 15,502.04, 21,393.69 and 8,428.31 is: 11,631.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.04 : 21,393.69 = 8,428.31 : x
  2. Step 2: Convert to fraction form
    15,502.04/21,393.69 = 8,428.31/x
  3. Step 3: Cross multiply
    15,502.04x = 21,393.69 × 8,428.31
  4. Step 4: Simplify right side
    15,502.04x = 180,312,651.36
  5. Step 5: Solve for x
    x = 180,312,651.36/15,502.04
  6. Step 6: Final answer
    x = 11,631.54

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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.