Home / 18,342.81-25,312.59-10,385.79

Finding the Fourth Proportional to 18,342.81, 25,312.59 and 10,385.79

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Solution

The fourth proportional to 18,342.81, 25,312.59 and 10,385.79 is: 14,332.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.81 : 25,312.59 = 10,385.79 : x
  2. Step 2: Convert to fraction form
    18,342.81/25,312.59 = 10,385.79/x
  3. Step 3: Cross multiply
    18,342.81x = 25,312.59 × 10,385.79
  4. Step 4: Simplify right side
    18,342.81x = 262,891,244.10
  5. Step 5: Solve for x
    x = 262,891,244.10/18,342.81
  6. Step 6: Final answer
    x = 14,332.11

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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.