Home / 28,646.60-42,985.56-11,117.12

Finding the Fourth Proportional to 28,646.60, 42,985.56 and 11,117.12

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Solution

The fourth proportional to 28,646.60, 42,985.56 and 11,117.12 is: 16,681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,646.60 : 42,985.56 = 11,117.12 : x
  2. Step 2: Convert to fraction form
    28,646.60/42,985.56 = 11,117.12/x
  3. Step 3: Cross multiply
    28,646.60x = 42,985.56 × 11,117.12
  4. Step 4: Simplify right side
    28,646.60x = 477,875,628.79
  5. Step 5: Solve for x
    x = 477,875,628.79/28,646.60
  6. Step 6: Final answer
    x = 16,681.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.