Home / 15,424.49-21,285.65-8,710.00

Finding the Fourth Proportional to 15,424.49, 21,285.65 and 8,710.00

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Solution

The fourth proportional to 15,424.49, 21,285.65 and 8,710.00 is: 12,019.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.49 : 21,285.65 = 8,710.00 : x
  2. Step 2: Convert to fraction form
    15,424.49/21,285.65 = 8,710.00/x
  3. Step 3: Cross multiply
    15,424.49x = 21,285.65 × 8,710.00
  4. Step 4: Simplify right side
    15,424.49x = 185,397,980.06
  5. Step 5: Solve for x
    x = 185,397,980.06/15,424.49
  6. Step 6: Final answer
    x = 12,019.71

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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.