Home / 15,615.36-21,549.73-8,901.98

Finding the Fourth Proportional to 15,615.36, 21,549.73 and 8,901.98

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Solution

The fourth proportional to 15,615.36, 21,549.73 and 8,901.98 is: 12,285.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.36 : 21,549.73 = 8,901.98 : x
  2. Step 2: Convert to fraction form
    15,615.36/21,549.73 = 8,901.98/x
  3. Step 3: Cross multiply
    15,615.36x = 21,549.73 × 8,901.98
  4. Step 4: Simplify right side
    15,615.36x = 191,835,265.47
  5. Step 5: Solve for x
    x = 191,835,265.47/15,615.36
  6. Step 6: Final answer
    x = 12,285.04

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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.