Home / 30,900.16-42,642.28-16,752.90

Finding the Fourth Proportional to 30,900.16, 42,642.28 and 16,752.90

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Solution

The fourth proportional to 30,900.16, 42,642.28 and 16,752.90 is: 23,119.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,900.16 : 42,642.28 = 16,752.90 : x
  2. Step 2: Convert to fraction form
    30,900.16/42,642.28 = 16,752.90/x
  3. Step 3: Cross multiply
    30,900.16x = 42,642.28 × 16,752.90
  4. Step 4: Simplify right side
    30,900.16x = 714,381,852.61
  5. Step 5: Solve for x
    x = 714,381,852.61/30,900.16
  6. Step 6: Final answer
    x = 23,119.03

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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.