Home / 18,690.16-25,789.76-10,307.20

Finding the Fourth Proportional to 18,690.16, 25,789.76 and 10,307.20

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Solution

The fourth proportional to 18,690.16, 25,789.76 and 10,307.20 is: 14,222.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.16 : 25,789.76 = 10,307.20 : x
  2. Step 2: Convert to fraction form
    18,690.16/25,789.76 = 10,307.20/x
  3. Step 3: Cross multiply
    18,690.16x = 25,789.76 × 10,307.20
  4. Step 4: Simplify right side
    18,690.16x = 265,820,214.27
  5. Step 5: Solve for x
    x = 265,820,214.27/18,690.16
  6. Step 6: Final answer
    x = 14,222.47

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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.