Home / 28,226.10-38,952.55-15,478.52

Finding the Fourth Proportional to 28,226.10, 38,952.55 and 15,478.52

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Solution

The fourth proportional to 28,226.10, 38,952.55 and 15,478.52 is: 21,360.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,226.10 : 38,952.55 = 15,478.52 : x
  2. Step 2: Convert to fraction form
    28,226.10/38,952.55 = 15,478.52/x
  3. Step 3: Cross multiply
    28,226.10x = 38,952.55 × 15,478.52
  4. Step 4: Simplify right side
    28,226.10x = 602,927,736.84
  5. Step 5: Solve for x
    x = 602,927,736.84/28,226.10
  6. Step 6: Final answer
    x = 21,360.65

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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.