Home / 28,199.84-38,916.06-15,624.50

Finding the Fourth Proportional to 28,199.84, 38,916.06 and 15,624.50

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Solution

The fourth proportional to 28,199.84, 38,916.06 and 15,624.50 is: 21,561.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,199.84 : 38,916.06 = 15,624.50 : x
  2. Step 2: Convert to fraction form
    28,199.84/38,916.06 = 15,624.50/x
  3. Step 3: Cross multiply
    28,199.84x = 38,916.06 × 15,624.50
  4. Step 4: Simplify right side
    28,199.84x = 608,043,979.47
  5. Step 5: Solve for x
    x = 608,043,979.47/28,199.84
  6. Step 6: Final answer
    x = 21,561.97

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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.