Home / 30,851.48-42,543.23-26,390.00

Finding the Fourth Proportional to 30,851.48, 42,543.23 and 26,390.00

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Solution

The fourth proportional to 30,851.48, 42,543.23 and 26,390.00 is: 36,390.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,851.48 : 42,543.23 = 26,390.00 : x
  2. Step 2: Convert to fraction form
    30,851.48/42,543.23 = 26,390.00/x
  3. Step 3: Cross multiply
    30,851.48x = 42,543.23 × 26,390.00
  4. Step 4: Simplify right side
    30,851.48x = 1,122,715,814.11
  5. Step 5: Solve for x
    x = 1,122,715,814.11/30,851.48
  6. Step 6: Final answer
    x = 36,390.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.