Home / 30,931.56-42,685.86-16,784.52

Finding the Fourth Proportional to 30,931.56, 42,685.86 and 16,784.52

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Solution

The fourth proportional to 30,931.56, 42,685.86 and 16,784.52 is: 23,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,931.56 : 42,685.86 = 16,784.52 : x
  2. Step 2: Convert to fraction form
    30,931.56/42,685.86 = 16,784.52/x
  3. Step 3: Cross multiply
    30,931.56x = 42,685.86 × 16,784.52
  4. Step 4: Simplify right side
    30,931.56x = 716,461,670.89
  5. Step 5: Solve for x
    x = 716,461,670.89/30,931.56
  6. Step 6: Final answer
    x = 23,162.80

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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.