Home / 30,445.48-42,019.68-19,116.64

Finding the Fourth Proportional to 30,445.48, 42,019.68 and 19,116.64

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Solution

The fourth proportional to 30,445.48, 42,019.68 and 19,116.64 is: 26,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,445.48 : 42,019.68 = 19,116.64 : x
  2. Step 2: Convert to fraction form
    30,445.48/42,019.68 = 19,116.64/x
  3. Step 3: Cross multiply
    30,445.48x = 42,019.68 × 19,116.64
  4. Step 4: Simplify right side
    30,445.48x = 803,275,095.48
  5. Step 5: Solve for x
    x = 803,275,095.48/30,445.48
  6. Step 6: Final answer
    x = 26,384.05

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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.