Home / 16,980.07-23,432.49-9,905.13

Finding the Fourth Proportional to 16,980.07, 23,432.49 and 9,905.13

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Solution

The fourth proportional to 16,980.07, 23,432.49 and 9,905.13 is: 13,669.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,980.07 : 23,432.49 = 9,905.13 : x
  2. Step 2: Convert to fraction form
    16,980.07/23,432.49 = 9,905.13/x
  3. Step 3: Cross multiply
    16,980.07x = 23,432.49 × 9,905.13
  4. Step 4: Simplify right side
    16,980.07x = 232,101,859.67
  5. Step 5: Solve for x
    x = 232,101,859.67/16,980.07
  6. Step 6: Final answer
    x = 13,669.08

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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.