Home / 28,407.95-42,607.83-8,681.21

Finding the Fourth Proportional to 28,407.95, 42,607.83 and 8,681.21

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Solution

The fourth proportional to 28,407.95, 42,607.83 and 8,681.21 is: 13,020.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.95 : 42,607.83 = 8,681.21 : x
  2. Step 2: Convert to fraction form
    28,407.95/42,607.83 = 8,681.21/x
  3. Step 3: Cross multiply
    28,407.95x = 42,607.83 × 8,681.21
  4. Step 4: Simplify right side
    28,407.95x = 369,887,636.19
  5. Step 5: Solve for x
    x = 369,887,636.19/28,407.95
  6. Step 6: Final answer
    x = 13,020.57

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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.