Home / 31,151.60-42,988.92-19,210.16

Finding the Fourth Proportional to 31,151.60, 42,988.92 and 19,210.16

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Solution

The fourth proportional to 31,151.60, 42,988.92 and 19,210.16 is: 26,509.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,151.60 : 42,988.92 = 19,210.16 : x
  2. Step 2: Convert to fraction form
    31,151.60/42,988.92 = 19,210.16/x
  3. Step 3: Cross multiply
    31,151.60x = 42,988.92 × 19,210.16
  4. Step 4: Simplify right side
    31,151.60x = 825,824,031.43
  5. Step 5: Solve for x
    x = 825,824,031.43/31,151.60
  6. Step 6: Final answer
    x = 26,509.84

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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.