Home / 13,423.52-18,532.68-9,880.40

Finding the Fourth Proportional to 13,423.52, 18,532.68 and 9,880.40

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Solution

The fourth proportional to 13,423.52, 18,532.68 and 9,880.40 is: 13,641.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.52 : 18,532.68 = 9,880.40 : x
  2. Step 2: Convert to fraction form
    13,423.52/18,532.68 = 9,880.40/x
  3. Step 3: Cross multiply
    13,423.52x = 18,532.68 × 9,880.40
  4. Step 4: Simplify right side
    13,423.52x = 183,110,291.47
  5. Step 5: Solve for x
    x = 183,110,291.47/13,423.52
  6. Step 6: Final answer
    x = 13,641.00

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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.