Home / 28,212.18-38,933.28-15,465.10

Finding the Fourth Proportional to 28,212.18, 38,933.28 and 15,465.10

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Solution

The fourth proportional to 28,212.18, 38,933.28 and 15,465.10 is: 21,342.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.18 : 38,933.28 = 15,465.10 : x
  2. Step 2: Convert to fraction form
    28,212.18/38,933.28 = 15,465.10/x
  3. Step 3: Cross multiply
    28,212.18x = 38,933.28 × 15,465.10
  4. Step 4: Simplify right side
    28,212.18x = 602,107,068.53
  5. Step 5: Solve for x
    x = 602,107,068.53/28,212.18
  6. Step 6: Final answer
    x = 21,342.10

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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.