Home / 28,214.04-38,936.70-15,639

Finding the Fourth Proportional to 28,214.04, 38,936.70 and 15,639

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Solution

The fourth proportional to 28,214.04, 38,936.70 and 15,639 is: 21,582.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,214.04 : 38,936.70 = 15,639 : x
  2. Step 2: Convert to fraction form
    28,214.04/38,936.70 = 15,639/x
  3. Step 3: Cross multiply
    28,214.04x = 38,936.70 × 15,639
  4. Step 4: Simplify right side
    28,214.04x = 608,931,051.30
  5. Step 5: Solve for x
    x = 608,931,051.30/28,214.04
  6. Step 6: Final answer
    x = 21,582.55

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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.