Home / 38,970.61-53,779.25-21,065.46

Finding the Fourth Proportional to 38,970.61, 53,779.25 and 21,065.46

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Solution

The fourth proportional to 38,970.61, 53,779.25 and 21,065.46 is: 29,070.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,970.61 : 53,779.25 = 21,065.46 : x
  2. Step 2: Convert to fraction form
    38,970.61/53,779.25 = 21,065.46/x
  3. Step 3: Cross multiply
    38,970.61x = 53,779.25 × 21,065.46
  4. Step 4: Simplify right side
    38,970.61x = 1,132,884,639.71
  5. Step 5: Solve for x
    x = 1,132,884,639.71/38,970.61
  6. Step 6: Final answer
    x = 29,070.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.