Home / 15,528.78-23,237.55-13,455.77

Finding the Fourth Proportional to 15,528.78, 23,237.55 and 13,455.77

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Solution

The fourth proportional to 15,528.78, 23,237.55 and 13,455.77 is: 20,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.78 : 23,237.55 = 13,455.77 : x
  2. Step 2: Convert to fraction form
    15,528.78/23,237.55 = 13,455.77/x
  3. Step 3: Cross multiply
    15,528.78x = 23,237.55 × 13,455.77
  4. Step 4: Simplify right side
    15,528.78x = 312,679,011.98
  5. Step 5: Solve for x
    x = 312,679,011.98/15,528.78
  6. Step 6: Final answer
    x = 20,135.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.