Home / 15,890.13-21,929.45-9,176.04

Finding the Fourth Proportional to 15,890.13, 21,929.45 and 9,176.04

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Solution

The fourth proportional to 15,890.13, 21,929.45 and 9,176.04 is: 12,663.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.13 : 21,929.45 = 9,176.04 : x
  2. Step 2: Convert to fraction form
    15,890.13/21,929.45 = 9,176.04/x
  3. Step 3: Cross multiply
    15,890.13x = 21,929.45 × 9,176.04
  4. Step 4: Simplify right side
    15,890.13x = 201,225,464.50
  5. Step 5: Solve for x
    x = 201,225,464.50/15,890.13
  6. Step 6: Final answer
    x = 12,663.55

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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.