Home / 30,897.32-42,632.90-18,325.16

Finding the Fourth Proportional to 30,897.32, 42,632.90 and 18,325.16

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Solution

The fourth proportional to 30,897.32, 42,632.90 and 18,325.16 is: 25,285.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,897.32 : 42,632.90 = 18,325.16 : x
  2. Step 2: Convert to fraction form
    30,897.32/42,632.90 = 18,325.16/x
  3. Step 3: Cross multiply
    30,897.32x = 42,632.90 × 18,325.16
  4. Step 4: Simplify right side
    30,897.32x = 781,254,713.76
  5. Step 5: Solve for x
    x = 781,254,713.76/30,897.32
  6. Step 6: Final answer
    x = 25,285.52

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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.