Home / 15,655.34-21,605.26-9,285.71

Finding the Fourth Proportional to 15,655.34, 21,605.26 and 9,285.71

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Solution

The fourth proportional to 15,655.34, 21,605.26 and 9,285.71 is: 12,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.34 : 21,605.26 = 9,285.71 : x
  2. Step 2: Convert to fraction form
    15,655.34/21,605.26 = 9,285.71/x
  3. Step 3: Cross multiply
    15,655.34x = 21,605.26 × 9,285.71
  4. Step 4: Simplify right side
    15,655.34x = 200,620,047.59
  5. Step 5: Solve for x
    x = 200,620,047.59/15,655.34
  6. Step 6: Final answer
    x = 12,814.80

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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.