Home / 31,130.04-42,953.58-18,555.96

Finding the Fourth Proportional to 31,130.04, 42,953.58 and 18,555.96

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Solution

The fourth proportional to 31,130.04, 42,953.58 and 18,555.96 is: 25,603.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,130.04 : 42,953.58 = 18,555.96 : x
  2. Step 2: Convert to fraction form
    31,130.04/42,953.58 = 18,555.96/x
  3. Step 3: Cross multiply
    31,130.04x = 42,953.58 × 18,555.96
  4. Step 4: Simplify right side
    31,130.04x = 797,044,912.34
  5. Step 5: Solve for x
    x = 797,044,912.34/31,130.04
  6. Step 6: Final answer
    x = 25,603.72

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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.