Home / 20,598.81-28,426.55-11,167.40

Finding the Fourth Proportional to 20,598.81, 28,426.55 and 11,167.40

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Solution

The fourth proportional to 20,598.81, 28,426.55 and 11,167.40 is: 15,411.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,598.81 : 28,426.55 = 11,167.40 : x
  2. Step 2: Convert to fraction form
    20,598.81/28,426.55 = 11,167.40/x
  3. Step 3: Cross multiply
    20,598.81x = 28,426.55 × 11,167.40
  4. Step 4: Simplify right side
    20,598.81x = 317,450,456.50
  5. Step 5: Solve for x
    x = 317,450,456.50/20,598.81
  6. Step 6: Final answer
    x = 15,411.11

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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.