Home / 28,981.13-43,455.69-8,985.08

Finding the Fourth Proportional to 28,981.13, 43,455.69 and 8,985.08

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Solution

The fourth proportional to 28,981.13, 43,455.69 and 8,985.08 is: 13,472.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981.13 : 43,455.69 = 8,985.08 : x
  2. Step 2: Convert to fraction form
    28,981.13/43,455.69 = 8,985.08/x
  3. Step 3: Cross multiply
    28,981.13x = 43,455.69 × 8,985.08
  4. Step 4: Simplify right side
    28,981.13x = 390,452,959.74
  5. Step 5: Solve for x
    x = 390,452,959.74/28,981.13
  6. Step 6: Final answer
    x = 13,472.66

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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.