Home / 42,569.10-63,860.40-12,980.16

Finding the Fourth Proportional to 42,569.10, 63,860.40 and 12,980.16

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Solution

The fourth proportional to 42,569.10, 63,860.40 and 12,980.16 is: 19,472.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,569.10 : 63,860.40 = 12,980.16 : x
  2. Step 2: Convert to fraction form
    42,569.10/63,860.40 = 12,980.16/x
  3. Step 3: Cross multiply
    42,569.10x = 63,860.40 × 12,980.16
  4. Step 4: Simplify right side
    42,569.10x = 828,918,209.66
  5. Step 5: Solve for x
    x = 828,918,209.66/42,569.10
  6. Step 6: Final answer
    x = 19,472.30

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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.