Home / 15,435.16-21,305.96-9,385.48

Finding the Fourth Proportional to 15,435.16, 21,305.96 and 9,385.48

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Solution

The fourth proportional to 15,435.16, 21,305.96 and 9,385.48 is: 12,955.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.16 : 21,305.96 = 9,385.48 : x
  2. Step 2: Convert to fraction form
    15,435.16/21,305.96 = 9,385.48/x
  3. Step 3: Cross multiply
    15,435.16x = 21,305.96 × 9,385.48
  4. Step 4: Simplify right side
    15,435.16x = 199,966,661.46
  5. Step 5: Solve for x
    x = 199,966,661.46/15,435.16
  6. Step 6: Final answer
    x = 12,955.27

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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.