Home / 28,970.52-43,455.78-13,386.12

Finding the Fourth Proportional to 28,970.52, 43,455.78 and 13,386.12

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Solution

The fourth proportional to 28,970.52, 43,455.78 and 13,386.12 is: 20,079.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,970.52 : 43,455.78 = 13,386.12 : x
  2. Step 2: Convert to fraction form
    28,970.52/43,455.78 = 13,386.12/x
  3. Step 3: Cross multiply
    28,970.52x = 43,455.78 × 13,386.12
  4. Step 4: Simplify right side
    28,970.52x = 581,704,285.77
  5. Step 5: Solve for x
    x = 581,704,285.77/28,970.52
  6. Step 6: Final answer
    x = 20,079.18

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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.