Home / 42,979.80-64,430.82-15,271.32

Finding the Fourth Proportional to 42,979.80, 64,430.82 and 15,271.32

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Solution

The fourth proportional to 42,979.80, 64,430.82 and 15,271.32 is: 22,893.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,979.80 : 64,430.82 = 15,271.32 : x
  2. Step 2: Convert to fraction form
    42,979.80/64,430.82 = 15,271.32/x
  3. Step 3: Cross multiply
    42,979.80x = 64,430.82 × 15,271.32
  4. Step 4: Simplify right side
    42,979.80x = 983,943,670.08
  5. Step 5: Solve for x
    x = 983,943,670.08/42,979.80
  6. Step 6: Final answer
    x = 22,893.17

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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.