Home / 15,983.80-23,975.70-8,985.40

Finding the Fourth Proportional to 15,983.80, 23,975.70 and 8,985.40

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Solution

The fourth proportional to 15,983.80, 23,975.70 and 8,985.40 is: 13,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,983.80 : 23,975.70 = 8,985.40 : x
  2. Step 2: Convert to fraction form
    15,983.80/23,975.70 = 8,985.40/x
  3. Step 3: Cross multiply
    15,983.80x = 23,975.70 × 8,985.40
  4. Step 4: Simplify right side
    15,983.80x = 215,431,254.78
  5. Step 5: Solve for x
    x = 215,431,254.78/15,983.80
  6. Step 6: Final answer
    x = 13,478.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.