Home / 31,045.20-42,840.18-16,897.74

Finding the Fourth Proportional to 31,045.20, 42,840.18 and 16,897.74

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Solution

The fourth proportional to 31,045.20, 42,840.18 and 16,897.74 is: 23,317.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,045.20 : 42,840.18 = 16,897.74 : x
  2. Step 2: Convert to fraction form
    31,045.20/42,840.18 = 16,897.74/x
  3. Step 3: Cross multiply
    31,045.20x = 42,840.18 × 16,897.74
  4. Step 4: Simplify right side
    31,045.20x = 723,902,223.19
  5. Step 5: Solve for x
    x = 723,902,223.19/31,045.20
  6. Step 6: Final answer
    x = 23,317.69

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1.5x scale

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.