Home / 28,931.85-43,397.31-9,210.18

Finding the Fourth Proportional to 28,931.85, 43,397.31 and 9,210.18

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Solution

The fourth proportional to 28,931.85, 43,397.31 and 9,210.18 is: 13,815.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.85 : 43,397.31 = 9,210.18 : x
  2. Step 2: Convert to fraction form
    28,931.85/43,397.31 = 9,210.18/x
  3. Step 3: Cross multiply
    28,931.85x = 43,397.31 × 9,210.18
  4. Step 4: Simplify right side
    28,931.85x = 399,697,036.62
  5. Step 5: Solve for x
    x = 399,697,036.62/28,931.85
  6. Step 6: Final answer
    x = 13,815.12

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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.