Home / 42,864.90-64,271.48-19,159.64

Finding the Fourth Proportional to 42,864.90, 64,271.48 and 19,159.64

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Solution

The fourth proportional to 42,864.90, 64,271.48 and 19,159.64 is: 28,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,864.90 : 64,271.48 = 19,159.64 : x
  2. Step 2: Convert to fraction form
    42,864.90/64,271.48 = 19,159.64/x
  3. Step 3: Cross multiply
    42,864.90x = 64,271.48 × 19,159.64
  4. Step 4: Simplify right side
    42,864.90x = 1,231,418,242.93
  5. Step 5: Solve for x
    x = 1,231,418,242.93/42,864.90
  6. Step 6: Final answer
    x = 28,727.90

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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.