Home / 18,528.90-25,569.87-10,145.40

Finding the Fourth Proportional to 18,528.90, 25,569.87 and 10,145.40

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Solution

The fourth proportional to 18,528.90, 25,569.87 and 10,145.40 is: 14,000.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,528.90 : 25,569.87 = 10,145.40 : x
  2. Step 2: Convert to fraction form
    18,528.90/25,569.87 = 10,145.40/x
  3. Step 3: Cross multiply
    18,528.90x = 25,569.87 × 10,145.40
  4. Step 4: Simplify right side
    18,528.90x = 259,416,559.10
  5. Step 5: Solve for x
    x = 259,416,559.10/18,528.90
  6. Step 6: Final answer
    x = 14,000.65

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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.