Home / 31,077.90-42,888.80-16,931.52

Finding the Fourth Proportional to 31,077.90, 42,888.80 and 16,931.52

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Solution

The fourth proportional to 31,077.90, 42,888.80 and 16,931.52 is: 23,366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,077.90 : 42,888.80 = 16,931.52 : x
  2. Step 2: Convert to fraction form
    31,077.90/42,888.80 = 16,931.52/x
  3. Step 3: Cross multiply
    31,077.90x = 42,888.80 × 16,931.52
  4. Step 4: Simplify right side
    31,077.90x = 726,172,574.98
  5. Step 5: Solve for x
    x = 726,172,574.98/31,077.90
  6. Step 6: Final answer
    x = 23,366.20

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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.