Home / 28,122.52-38,808.78-15,547.24

Finding the Fourth Proportional to 28,122.52, 38,808.78 and 15,547.24

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Solution

The fourth proportional to 28,122.52, 38,808.78 and 15,547.24 is: 21,455.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.52 : 38,808.78 = 15,547.24 : x
  2. Step 2: Convert to fraction form
    28,122.52/38,808.78 = 15,547.24/x
  3. Step 3: Cross multiply
    28,122.52x = 38,808.78 × 15,547.24
  4. Step 4: Simplify right side
    28,122.52x = 603,369,416.77
  5. Step 5: Solve for x
    x = 603,369,416.77/28,122.52
  6. Step 6: Final answer
    x = 21,455.03

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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.