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Finding the Fourth Proportional to 15,210.80, 22,864.80 and 10,858.40

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Solution

The fourth proportional to 15,210.80, 22,864.80 and 10,858.40 is: 16,322.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.80 : 22,864.80 = 10,858.40 : x
  2. Step 2: Convert to fraction form
    15,210.80/22,864.80 = 10,858.40/x
  3. Step 3: Cross multiply
    15,210.80x = 22,864.80 × 10,858.40
  4. Step 4: Simplify right side
    15,210.80x = 248,275,144.32
  5. Step 5: Solve for x
    x = 248,275,144.32/15,210.80
  6. Step 6: Final answer
    x = 16,322.29

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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.