Home / 13,555.61-20,255.71-10,332.06

Finding the Fourth Proportional to 13,555.61, 20,255.71 and 10,332.06

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Solution

The fourth proportional to 13,555.61, 20,255.71 and 10,332.06 is: 15,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.61 : 20,255.71 = 10,332.06 : x
  2. Step 2: Convert to fraction form
    13,555.61/20,255.71 = 10,332.06/x
  3. Step 3: Cross multiply
    13,555.61x = 20,255.71 × 10,332.06
  4. Step 4: Simplify right side
    13,555.61x = 209,283,271.64
  5. Step 5: Solve for x
    x = 209,283,271.64/13,555.61
  6. Step 6: Final answer
    x = 15,438.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.