Home / 42,569.79-63,864.69-12,987.63

Finding the Fourth Proportional to 42,569.79, 63,864.69 and 12,987.63

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Solution

The fourth proportional to 42,569.79, 63,864.69 and 12,987.63 is: 19,484.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,569.79 : 63,864.69 = 12,987.63 : x
  2. Step 2: Convert to fraction form
    42,569.79/63,864.69 = 12,987.63/x
  3. Step 3: Cross multiply
    42,569.79x = 63,864.69 × 12,987.63
  4. Step 4: Simplify right side
    42,569.79x = 829,450,963.78
  5. Step 5: Solve for x
    x = 829,450,963.78/42,569.79
  6. Step 6: Final answer
    x = 19,484.50

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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.