Home / 18,360.90-25,338.02-10,402.65

Finding the Fourth Proportional to 18,360.90, 25,338.02 and 10,402.65

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Solution

The fourth proportional to 18,360.90, 25,338.02 and 10,402.65 is: 14,355.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.90 : 25,338.02 = 10,402.65 : x
  2. Step 2: Convert to fraction form
    18,360.90/25,338.02 = 10,402.65/x
  3. Step 3: Cross multiply
    18,360.90x = 25,338.02 × 10,402.65
  4. Step 4: Simplify right side
    18,360.90x = 263,582,501.74
  5. Step 5: Solve for x
    x = 263,582,501.74/18,360.90
  6. Step 6: Final answer
    x = 14,355.64

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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.