Home / 26,421-36,461.25-15,812.70

Finding the Fourth Proportional to 26,421, 36,461.25 and 15,812.70

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Solution

The fourth proportional to 26,421, 36,461.25 and 15,812.70 is: 21,821.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,421 : 36,461.25 = 15,812.70 : x
  2. Step 2: Convert to fraction form
    26,421/36,461.25 = 15,812.70/x
  3. Step 3: Cross multiply
    26,421x = 36,461.25 × 15,812.70
  4. Step 4: Simplify right side
    26,421x = 576,550,807.88
  5. Step 5: Solve for x
    x = 576,550,807.88/26,421
  6. Step 6: Final answer
    x = 21,821.69

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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.