Home / 19,147.59-26,427.47-12,423.78

Finding the Fourth Proportional to 19,147.59, 26,427.47 and 12,423.78

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Solution

The fourth proportional to 19,147.59, 26,427.47 and 12,423.78 is: 17,147.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.59 : 26,427.47 = 12,423.78 : x
  2. Step 2: Convert to fraction form
    19,147.59/26,427.47 = 12,423.78/x
  3. Step 3: Cross multiply
    19,147.59x = 26,427.47 × 12,423.78
  4. Step 4: Simplify right side
    19,147.59x = 328,329,011.12
  5. Step 5: Solve for x
    x = 328,329,011.12/19,147.59
  6. Step 6: Final answer
    x = 17,147.28

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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.