Home / 29,615.12-40,798.56-20,646.40

Finding the Fourth Proportional to 29,615.12, 40,798.56 and 20,646.40

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Solution

The fourth proportional to 29,615.12, 40,798.56 and 20,646.40 is: 28,443.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,615.12 : 40,798.56 = 20,646.40 : x
  2. Step 2: Convert to fraction form
    29,615.12/40,798.56 = 20,646.40/x
  3. Step 3: Cross multiply
    29,615.12x = 40,798.56 × 20,646.40
  4. Step 4: Simplify right side
    29,615.12x = 842,343,389.18
  5. Step 5: Solve for x
    x = 842,343,389.18/29,615.12
  6. Step 6: Final answer
    x = 28,443.02

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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.