Home / 30,543.38-42,170.40-19,075.76

Finding the Fourth Proportional to 30,543.38, 42,170.40 and 19,075.76

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Solution

The fourth proportional to 30,543.38, 42,170.40 and 19,075.76 is: 26,337.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,543.38 : 42,170.40 = 19,075.76 : x
  2. Step 2: Convert to fraction form
    30,543.38/42,170.40 = 19,075.76/x
  3. Step 3: Cross multiply
    30,543.38x = 42,170.40 × 19,075.76
  4. Step 4: Simplify right side
    30,543.38x = 804,432,429.50
  5. Step 5: Solve for x
    x = 804,432,429.50/30,543.38
  6. Step 6: Final answer
    x = 26,337.37

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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.