Home / 42,356.40-63,547.29-12,775.20

Finding the Fourth Proportional to 42,356.40, 63,547.29 and 12,775.20

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Solution

The fourth proportional to 42,356.40, 63,547.29 and 12,775.20 is: 19,166.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,356.40 : 63,547.29 = 12,775.20 : x
  2. Step 2: Convert to fraction form
    42,356.40/63,547.29 = 12,775.20/x
  3. Step 3: Cross multiply
    42,356.40x = 63,547.29 × 12,775.20
  4. Step 4: Simplify right side
    42,356.40x = 811,829,339.21
  5. Step 5: Solve for x
    x = 811,829,339.21/42,356.40
  6. Step 6: Final answer
    x = 19,166.63

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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.