Home / 20,810.95-31,237.49-18,454.16

Finding the Fourth Proportional to 20,810.95, 31,237.49 and 18,454.16

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Solution

The fourth proportional to 20,810.95, 31,237.49 and 18,454.16 is: 27,699.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.95 : 31,237.49 = 18,454.16 : x
  2. Step 2: Convert to fraction form
    20,810.95/31,237.49 = 18,454.16/x
  3. Step 3: Cross multiply
    20,810.95x = 31,237.49 × 18,454.16
  4. Step 4: Simplify right side
    20,810.95x = 576,461,762.69
  5. Step 5: Solve for x
    x = 576,461,762.69/20,810.95
  6. Step 6: Final answer
    x = 27,699.93

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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.