Home / 42,612.84-63,918.72-13,031.64

Finding the Fourth Proportional to 42,612.84, 63,918.72 and 13,031.64

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Solution

The fourth proportional to 42,612.84, 63,918.72 and 13,031.64 is: 19,547.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,612.84 : 63,918.72 = 13,031.64 : x
  2. Step 2: Convert to fraction form
    42,612.84/63,918.72 = 13,031.64/x
  3. Step 3: Cross multiply
    42,612.84x = 63,918.72 × 13,031.64
  4. Step 4: Simplify right side
    42,612.84x = 832,965,748.30
  5. Step 5: Solve for x
    x = 832,965,748.30/42,612.84
  6. Step 6: Final answer
    x = 19,547.29

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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.