Home / 30,489.60-42,077.60-17,062.40

Finding the Fourth Proportional to 30,489.60, 42,077.60 and 17,062.40

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Solution

The fourth proportional to 30,489.60, 42,077.60 and 17,062.40 is: 23,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,489.60 : 42,077.60 = 17,062.40 : x
  2. Step 2: Convert to fraction form
    30,489.60/42,077.60 = 17,062.40/x
  3. Step 3: Cross multiply
    30,489.60x = 42,077.60 × 17,062.40
  4. Step 4: Simplify right side
    30,489.60x = 717,944,842.24
  5. Step 5: Solve for x
    x = 717,944,842.24/30,489.60
  6. Step 6: Final answer
    x = 23,547.20

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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.