Home / 28,130.10-38,818.77-15,554.42

Finding the Fourth Proportional to 28,130.10, 38,818.77 and 15,554.42

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Solution

The fourth proportional to 28,130.10, 38,818.77 and 15,554.42 is: 21,464.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.10 : 38,818.77 = 15,554.42 : x
  2. Step 2: Convert to fraction form
    28,130.10/38,818.77 = 15,554.42/x
  3. Step 3: Cross multiply
    28,130.10x = 38,818.77 × 15,554.42
  4. Step 4: Simplify right side
    28,130.10x = 603,803,452.46
  5. Step 5: Solve for x
    x = 603,803,452.46/28,130.10
  6. Step 6: Final answer
    x = 21,464.67

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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.