Home / 20,977.56-31,436.95-10,437.59

Finding the Fourth Proportional to 20,977.56, 31,436.95 and 10,437.59

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Solution

The fourth proportional to 20,977.56, 31,436.95 and 10,437.59 is: 15,641.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.56 : 31,436.95 = 10,437.59 : x
  2. Step 2: Convert to fraction form
    20,977.56/31,436.95 = 10,437.59/x
  3. Step 3: Cross multiply
    20,977.56x = 31,436.95 × 10,437.59
  4. Step 4: Simplify right side
    20,977.56x = 328,125,994.95
  5. Step 5: Solve for x
    x = 328,125,994.95/20,977.56
  6. Step 6: Final answer
    x = 15,641.76

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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.