Home / 42,289.12-63,417.36-12,700

Finding the Fourth Proportional to 42,289.12, 63,417.36 and 12,700

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Solution

The fourth proportional to 42,289.12, 63,417.36 and 12,700 is: 19,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,289.12 : 63,417.36 = 12,700 : x
  2. Step 2: Convert to fraction form
    42,289.12/63,417.36 = 12,700/x
  3. Step 3: Cross multiply
    42,289.12x = 63,417.36 × 12,700
  4. Step 4: Simplify right side
    42,289.12x = 805,400,472
  5. Step 5: Solve for x
    x = 805,400,472/42,289.12
  6. Step 6: Final answer
    x = 19,045.10

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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.