Home / 18,980.10-28,472.94-10,210.32

Finding the Fourth Proportional to 18,980.10, 28,472.94 and 10,210.32

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Solution

The fourth proportional to 18,980.10, 28,472.94 and 10,210.32 is: 15,316.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.10 : 28,472.94 = 10,210.32 : x
  2. Step 2: Convert to fraction form
    18,980.10/28,472.94 = 10,210.32/x
  3. Step 3: Cross multiply
    18,980.10x = 28,472.94 × 10,210.32
  4. Step 4: Simplify right side
    18,980.10x = 290,717,828.74
  5. Step 5: Solve for x
    x = 290,717,828.74/18,980.10
  6. Step 6: Final answer
    x = 15,316.98

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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.